Author: Stefan Lautenbacher
Publisher: Springer Science & Business Media
ISBN: 1441990682
Category : Psychology
Languages : en
Pages : 252
Book Description
Under certain pathological conditions, the pain processing system, which includes both physiological and psychological components, can produce the experience of pain in the absence of any peripheral noxious event. Considerable evidence now indicates that alterations in pain perception are characteristic of many clinical pain states. Pathophysiology of Pain Perception primarily examines these pathological alterations in the pain-signaling system, with contributions from leading researchers in the field focusing on the functioning of the pain processing system under normal and pathological conditions. The understanding of pain perception is essential for optimal diagnosis and treatment of acute and chronic pain. This book covers the basics of pain perception (peripheral and central neurotransmission, methods of assessment), various pathological (chronic pain conditions, neurological and psychiatric diseases, cardiovascular disease), and non-pathological alterations of pain perception (pregnancy, labor) as well as the treatments aiming at influencing pain perception such as pharmacological, physical and psychological treatments.
Pathophysiology of Pain Perception
Author: Stefan Lautenbacher
Publisher: Springer Science & Business Media
ISBN: 1441990682
Category : Psychology
Languages : en
Pages : 252
Book Description
Under certain pathological conditions, the pain processing system, which includes both physiological and psychological components, can produce the experience of pain in the absence of any peripheral noxious event. Considerable evidence now indicates that alterations in pain perception are characteristic of many clinical pain states. Pathophysiology of Pain Perception primarily examines these pathological alterations in the pain-signaling system, with contributions from leading researchers in the field focusing on the functioning of the pain processing system under normal and pathological conditions. The understanding of pain perception is essential for optimal diagnosis and treatment of acute and chronic pain. This book covers the basics of pain perception (peripheral and central neurotransmission, methods of assessment), various pathological (chronic pain conditions, neurological and psychiatric diseases, cardiovascular disease), and non-pathological alterations of pain perception (pregnancy, labor) as well as the treatments aiming at influencing pain perception such as pharmacological, physical and psychological treatments.
Publisher: Springer Science & Business Media
ISBN: 1441990682
Category : Psychology
Languages : en
Pages : 252
Book Description
Under certain pathological conditions, the pain processing system, which includes both physiological and psychological components, can produce the experience of pain in the absence of any peripheral noxious event. Considerable evidence now indicates that alterations in pain perception are characteristic of many clinical pain states. Pathophysiology of Pain Perception primarily examines these pathological alterations in the pain-signaling system, with contributions from leading researchers in the field focusing on the functioning of the pain processing system under normal and pathological conditions. The understanding of pain perception is essential for optimal diagnosis and treatment of acute and chronic pain. This book covers the basics of pain perception (peripheral and central neurotransmission, methods of assessment), various pathological (chronic pain conditions, neurological and psychiatric diseases, cardiovascular disease), and non-pathological alterations of pain perception (pregnancy, labor) as well as the treatments aiming at influencing pain perception such as pharmacological, physical and psychological treatments.
Pain and Disability
Author: Institute of Medicine
Publisher: National Academies Press
ISBN: 0309037379
Category : Medical
Languages : en
Pages : 318
Book Description
Painâ€"it is the most common complaint presented to physicians. Yet pain is subjectiveâ€"it cannot be measured directly and is difficult to validate. Evaluating claims based on pain poses major problems for the Social Security Administration (SSA) and other disability insurers. This volume covers the epidemiology and physiology of pain; psychosocial contributions to pain and illness behavior; promising ways of assessing and measuring chronic pain and dysfunction; clinical aspects of prevention, diagnosis, treatment, and rehabilitation; and how the SSA's benefit structure and administrative procedures may affect pain complaints.
Publisher: National Academies Press
ISBN: 0309037379
Category : Medical
Languages : en
Pages : 318
Book Description
Painâ€"it is the most common complaint presented to physicians. Yet pain is subjectiveâ€"it cannot be measured directly and is difficult to validate. Evaluating claims based on pain poses major problems for the Social Security Administration (SSA) and other disability insurers. This volume covers the epidemiology and physiology of pain; psychosocial contributions to pain and illness behavior; promising ways of assessing and measuring chronic pain and dysfunction; clinical aspects of prevention, diagnosis, treatment, and rehabilitation; and how the SSA's benefit structure and administrative procedures may affect pain complaints.
The Human Pain System
Author: Frederick A. Lenz
Publisher: Cambridge University Press
ISBN: 1139481800
Category : Medical
Languages : en
Pages : 649
Book Description
Pain is a subject of significant scientific and clinical interest. This has resulted both from realistic rodent models, and the publication of imaging, psychological and pharmacological studies in humans. Investigators studying rodents refer to anatomical and physiological studies in non-human primates to make their results relevant to humans. Psychophysical and pharmacological studies in humans are interpreted in terms of anatomical and physiological studies in animals; primarily evidence from rodents and cats. There are significant differences in pain mechanisms between these species and primates. Over 20 years of imaging studies have demonstrated the activation of human cortical and subcortical structures in response to painful stimuli. Interpretation of these results relies upon an understanding of the anatomy and physiology of these structures in primates. Jones, Lenz, Casey and Willis review the anatomy and physiology of nociception in monkeys and humans, and provide a firm basis for interpreting studies in humans.
Publisher: Cambridge University Press
ISBN: 1139481800
Category : Medical
Languages : en
Pages : 649
Book Description
Pain is a subject of significant scientific and clinical interest. This has resulted both from realistic rodent models, and the publication of imaging, psychological and pharmacological studies in humans. Investigators studying rodents refer to anatomical and physiological studies in non-human primates to make their results relevant to humans. Psychophysical and pharmacological studies in humans are interpreted in terms of anatomical and physiological studies in animals; primarily evidence from rodents and cats. There are significant differences in pain mechanisms between these species and primates. Over 20 years of imaging studies have demonstrated the activation of human cortical and subcortical structures in response to painful stimuli. Interpretation of these results relies upon an understanding of the anatomy and physiology of these structures in primates. Jones, Lenz, Casey and Willis review the anatomy and physiology of nociception in monkeys and humans, and provide a firm basis for interpreting studies in humans.
Pain Modulation
Author: Howard L. Fields
Publisher: Elsevier Publishing Company
ISBN: 9780444809841
Category : Medical
Languages : en
Pages : 454
Book Description
This volume represents edited material that was presented at a conference on brainstem modulation of spinal nociception held in Beaune, France during July, 1987. Pain Modulation, Volume 77 in the series Progress in Brain Research reviews, analyses and suggests new research strategies on several relevant topics including: the endogenous opioid peptides; sites of action of opiates; the role of biogenic animes and non-opioid peptides in analgesia; dorsal horn circuitry; behavioural factors in the activation of pain modulating networks and clinical studies of nociceptive modulation.
Publisher: Elsevier Publishing Company
ISBN: 9780444809841
Category : Medical
Languages : en
Pages : 454
Book Description
This volume represents edited material that was presented at a conference on brainstem modulation of spinal nociception held in Beaune, France during July, 1987. Pain Modulation, Volume 77 in the series Progress in Brain Research reviews, analyses and suggests new research strategies on several relevant topics including: the endogenous opioid peptides; sites of action of opiates; the role of biogenic animes and non-opioid peptides in analgesia; dorsal horn circuitry; behavioural factors in the activation of pain modulating networks and clinical studies of nociceptive modulation.
Neuroscience of Pain, Stress, and Emotion
Author: Magne Arve Flaten
Publisher: Academic Press
ISBN: 0128006668
Category : Psychology
Languages : en
Pages : 312
Book Description
Neuroscience of Pain, Stress, and Emotion: Psychological and Clinical Implications presents updated research on stress, pain, and emotion, all key research areas within both basic and clinical neuroscience. Improved research understanding of their interaction is ultimately necessary if clinicians and those working in the field of psychosomatic medicine are to alleviate patient suffering. This volume offers broad coverage of that interaction, with chapters written by major researchers in the field. After reviewing the neuroscience of pain and stress, the contents go on to address the interaction between stress and chronic/acute pain, the role of different emotions in pain, neurobiological mechanisms mediating these various interactions, individual differences in both stress and pain, the role of patient expectations during treatment (placebo and nocebo responses), and how those relate to stress modulation. While there are books on the market which discuss pain, stress, and emotion separately, this volume is the first to tackle their nexus, thus appealing to both researchers and clinicians. - Represents the only comprehensive reference detailing the link between pain, stress and emotion, covering the neuroscientific underpinnings, related psychological processes, and clinical implications - Compiles, in one place, research which promises to improve the methodology of clinical trials and the use of knowledge of pain-stress-emotion effects in order to reduce patients' suffering - Provides comprehensive chapters authored by global leaders in the field, the broadest, most expert coverage available
Publisher: Academic Press
ISBN: 0128006668
Category : Psychology
Languages : en
Pages : 312
Book Description
Neuroscience of Pain, Stress, and Emotion: Psychological and Clinical Implications presents updated research on stress, pain, and emotion, all key research areas within both basic and clinical neuroscience. Improved research understanding of their interaction is ultimately necessary if clinicians and those working in the field of psychosomatic medicine are to alleviate patient suffering. This volume offers broad coverage of that interaction, with chapters written by major researchers in the field. After reviewing the neuroscience of pain and stress, the contents go on to address the interaction between stress and chronic/acute pain, the role of different emotions in pain, neurobiological mechanisms mediating these various interactions, individual differences in both stress and pain, the role of patient expectations during treatment (placebo and nocebo responses), and how those relate to stress modulation. While there are books on the market which discuss pain, stress, and emotion separately, this volume is the first to tackle their nexus, thus appealing to both researchers and clinicians. - Represents the only comprehensive reference detailing the link between pain, stress and emotion, covering the neuroscientific underpinnings, related psychological processes, and clinical implications - Compiles, in one place, research which promises to improve the methodology of clinical trials and the use of knowledge of pain-stress-emotion effects in order to reduce patients' suffering - Provides comprehensive chapters authored by global leaders in the field, the broadest, most expert coverage available
Windows to the Brain
Author: Robin A. Hurley
Publisher: American Psychiatric Pub
ISBN: 1585628816
Category : Medical
Languages : en
Pages : 266
Book Description
Windows to the Brain is the only book to synthesize neuroanatomical and imaging research as it pertains to selected neuropsychiatric diseases, containing all of the "Windows to the Brain" papers published from 1999-2006 in the Journal of Neuropsychiatry and Clinical Neurosciences. These reader-friendly summaries by more than sixty contributors present modern imaging techniques that assist in the diagnosis of neuropsychiatric illness, enhanced by easily understood color graphics of the neuroanatomical circuits of behavior, memory, and emotion. They provide a basic understanding of how to apply a variety of imaging techniques to the study of adult neuropsychiatric disease and how to use neuroimaging to assist in diagnostic work-ups for conditions ranging from sleep disorders to epilepsy to borderline personality. Integrated, color-coded graphics present functional anatomical information in a manner that promotes understanding and use in clinical practice, while the text encompasses a wide range of diseases and injuries across the adult lifespan. The book is organized into four sections that will help readers increase their appreciation of the wide range of research and clinical applications for imaging in neuropsychiatry: chapters on imaging techniques discuss underlying principles, strengths and weaknesses, and applications; chapters on specific diseases demonstrate a range of investigative techniques; anatomy/circuit chapters focus on particular brain structures or functional neuropsychiatric circuits; and final chapters present image-based approaches to understanding or selecting treatment options. Some of the applications described are: Use of fMRI in posttraumatic stress disorder to reveal the delicate balance between the structures of the emotion and memory tracks; Use of high-resolution MRI and nuclear imaging to distinguish between panic disorder and simple partial seizure disorder; Use of functional imaging studies to detect corticobasal degeneration, as a means of better understanding dementia; Use of newer imaging techniques in identifying progressive multifocal leukoencephalopathy, to enable more rapid and reliable tailoring of individual therapy for HIV; Use of functional neuroimaging in the study of fear, in order to better understand and treat anxiety-based psychiatric disorders; Use of neuroimaging studies in conversion disorder, showing implications for the disruption of selfhood in dissociative identity disorder and schizophrenia; Use of FDG-PET scans to look for predictors of treatment response in childhood-onset obsessive-compulsive disorder. Windows to the Brain can help bring less-experienced readers up to speed on advanced imaging and anatomical details that pertain to the modern practice of neuropsychiatry. It is must-reading for specialists in neuropsychiatry and cognitive/behavioral neurology, or for general psychiatrists with an interest in neuroimaging.
Publisher: American Psychiatric Pub
ISBN: 1585628816
Category : Medical
Languages : en
Pages : 266
Book Description
Windows to the Brain is the only book to synthesize neuroanatomical and imaging research as it pertains to selected neuropsychiatric diseases, containing all of the "Windows to the Brain" papers published from 1999-2006 in the Journal of Neuropsychiatry and Clinical Neurosciences. These reader-friendly summaries by more than sixty contributors present modern imaging techniques that assist in the diagnosis of neuropsychiatric illness, enhanced by easily understood color graphics of the neuroanatomical circuits of behavior, memory, and emotion. They provide a basic understanding of how to apply a variety of imaging techniques to the study of adult neuropsychiatric disease and how to use neuroimaging to assist in diagnostic work-ups for conditions ranging from sleep disorders to epilepsy to borderline personality. Integrated, color-coded graphics present functional anatomical information in a manner that promotes understanding and use in clinical practice, while the text encompasses a wide range of diseases and injuries across the adult lifespan. The book is organized into four sections that will help readers increase their appreciation of the wide range of research and clinical applications for imaging in neuropsychiatry: chapters on imaging techniques discuss underlying principles, strengths and weaknesses, and applications; chapters on specific diseases demonstrate a range of investigative techniques; anatomy/circuit chapters focus on particular brain structures or functional neuropsychiatric circuits; and final chapters present image-based approaches to understanding or selecting treatment options. Some of the applications described are: Use of fMRI in posttraumatic stress disorder to reveal the delicate balance between the structures of the emotion and memory tracks; Use of high-resolution MRI and nuclear imaging to distinguish between panic disorder and simple partial seizure disorder; Use of functional imaging studies to detect corticobasal degeneration, as a means of better understanding dementia; Use of newer imaging techniques in identifying progressive multifocal leukoencephalopathy, to enable more rapid and reliable tailoring of individual therapy for HIV; Use of functional neuroimaging in the study of fear, in order to better understand and treat anxiety-based psychiatric disorders; Use of neuroimaging studies in conversion disorder, showing implications for the disruption of selfhood in dissociative identity disorder and schizophrenia; Use of FDG-PET scans to look for predictors of treatment response in childhood-onset obsessive-compulsive disorder. Windows to the Brain can help bring less-experienced readers up to speed on advanced imaging and anatomical details that pertain to the modern practice of neuropsychiatry. It is must-reading for specialists in neuropsychiatry and cognitive/behavioral neurology, or for general psychiatrists with an interest in neuroimaging.
Pain in Women
Author: Allison Bailey
Publisher: Springer Science & Business Media
ISBN: 1441971130
Category : Medical
Languages : en
Pages : 324
Book Description
Pain is a complex experience, influenced by many variables. There is currently growing interest in the influence of sex and gender on the experience of pain. The fact that there are sex differences in pain and analgesia is now a well-recognized phenomenon within the field of pain medicine. However, the specific mechanisms underlying these differences remain somewhat poorly understood. Traditionally, these sex differences in pain experience have been attributed largely to psychological, behavioral and socio-cultural variables - in particular, a perceived greater willingness on the part of women to report painful symptoms and seek medical attention. Although psychosocial factors do influence pain perception, there is now substantial evidence to support a strong role for hormonal factors mediating sex differences in pain modulation. In Pain in Women: A Clinical Guide, a renowned group of experts in pain medicine breaks new ground in the field by synthesizing and elucidating the range of biological and neurohormonal factors underlying these conditions and clarifying potential treatment options based on these factors. The initial section of this unique title introduces the topic of pain in women and its importance and then goes on to describe hormonal and myofascial considerations in this patient population. The second section addresses specific pain disorders common in women and the various treatment options for these, including rehabilitative and complementary and alternative medicine (CAM) treatments. The third and final section covers the specific populations of the pregnant/postpartum woman, issues related to breast cancer, the female athlete, menopausal considerations and the role of physical therapy in women’s health. Timely and state-of-the-art, Pain in Women: A Clinical Guide is an important new reference that fills a significant need in the developing area of pain medicine.
Publisher: Springer Science & Business Media
ISBN: 1441971130
Category : Medical
Languages : en
Pages : 324
Book Description
Pain is a complex experience, influenced by many variables. There is currently growing interest in the influence of sex and gender on the experience of pain. The fact that there are sex differences in pain and analgesia is now a well-recognized phenomenon within the field of pain medicine. However, the specific mechanisms underlying these differences remain somewhat poorly understood. Traditionally, these sex differences in pain experience have been attributed largely to psychological, behavioral and socio-cultural variables - in particular, a perceived greater willingness on the part of women to report painful symptoms and seek medical attention. Although psychosocial factors do influence pain perception, there is now substantial evidence to support a strong role for hormonal factors mediating sex differences in pain modulation. In Pain in Women: A Clinical Guide, a renowned group of experts in pain medicine breaks new ground in the field by synthesizing and elucidating the range of biological and neurohormonal factors underlying these conditions and clarifying potential treatment options based on these factors. The initial section of this unique title introduces the topic of pain in women and its importance and then goes on to describe hormonal and myofascial considerations in this patient population. The second section addresses specific pain disorders common in women and the various treatment options for these, including rehabilitative and complementary and alternative medicine (CAM) treatments. The third and final section covers the specific populations of the pregnant/postpartum woman, issues related to breast cancer, the female athlete, menopausal considerations and the role of physical therapy in women’s health. Timely and state-of-the-art, Pain in Women: A Clinical Guide is an important new reference that fills a significant need in the developing area of pain medicine.
Atlas of Functional Anatomy for Regional Anesthesia and Pain Medicine
Author: Miguel Angel Reina
Publisher: Springer
ISBN: 3319095226
Category : Medical
Languages : en
Pages : 929
Book Description
This is the first atlas to depict in high-resolution images the fine structure of the spinal canal, the nervous plexuses, and the peripheral nerves in relation to clinical practice. The Atlas of Functional Anatomy for Regional Anesthesia and Pain Medicine contains more than 1500 images of unsurpassed quality, most of which have never been published, including scanning electron microscopy images of neuronal ultrastructures, macroscopic sectional anatomy, and three-dimensional images reconstructed from patient imaging studies. Each chapter begins with a short introduction on the covered subject but then allows the images to embody the rest of the work; detailed text accompanies figures to guide readers through anatomy, providing evidence-based, clinically relevant information. Beyond clinically relevant anatomy, the book features regional anesthesia equipment (needles, catheters, surgical gloves) and overview of some cutting edge research instruments (e.g. scanning electron microscopy and transmission electron microscopy). Of interest to regional anesthesiologists, interventional pain physicians, and surgeons, this compendium is meant to complement texts that do not have this type of graphic material in the subjects of regional anesthesia, interventional pain management, and surgical techniques of the spine or peripheral nerves.
Publisher: Springer
ISBN: 3319095226
Category : Medical
Languages : en
Pages : 929
Book Description
This is the first atlas to depict in high-resolution images the fine structure of the spinal canal, the nervous plexuses, and the peripheral nerves in relation to clinical practice. The Atlas of Functional Anatomy for Regional Anesthesia and Pain Medicine contains more than 1500 images of unsurpassed quality, most of which have never been published, including scanning electron microscopy images of neuronal ultrastructures, macroscopic sectional anatomy, and three-dimensional images reconstructed from patient imaging studies. Each chapter begins with a short introduction on the covered subject but then allows the images to embody the rest of the work; detailed text accompanies figures to guide readers through anatomy, providing evidence-based, clinically relevant information. Beyond clinically relevant anatomy, the book features regional anesthesia equipment (needles, catheters, surgical gloves) and overview of some cutting edge research instruments (e.g. scanning electron microscopy and transmission electron microscopy). Of interest to regional anesthesiologists, interventional pain physicians, and surgeons, this compendium is meant to complement texts that do not have this type of graphic material in the subjects of regional anesthesia, interventional pain management, and surgical techniques of the spine or peripheral nerves.
Social Pain
Author: Geoff MacDonald
Publisher: American Psychological Association (APA)
ISBN:
Category : Psychology
Languages : en
Pages : 280
Book Description
"Social pain is the experience of pain as a result of interpersonal rejection or loss, such as rejection from a social group, bullying, or the loss of a loved one. Research now shows that social pain results from the activation of certain components in physical pain systems. Although social, clinical, health, and developmental psychologists have each explored aspects of social pain, recent work from the neurosciences provides a coherent, unifying framework for integrative research. This edited volume provides the first comprehensive, multidisciplinary exploration of social pain. Part I examines the subject from a neuroscience perspective, outlining the evolutionary basis of social pain and tracing the genetic, neurological, and physiological underpinnings of the phenomenon. Part II explores the implications of social pain for functioning in interpersonal relationships; contributions examine the influence of painkillers on social emotions, the ability to relive past social hurts, and the relation of social pain to experiences of intimacy. Part III examines social pain from a biopsychosocial perspective in its consideration of the health implications of social pain, outlining the role of stress in social pain and the potential long-term health consequences of bullying. The book concludes with an integrative review of these diverse perspectives"--Publicity materials. (PsycINFO Database Record (c) 2010 APA, all rights reserved).
Publisher: American Psychological Association (APA)
ISBN:
Category : Psychology
Languages : en
Pages : 280
Book Description
"Social pain is the experience of pain as a result of interpersonal rejection or loss, such as rejection from a social group, bullying, or the loss of a loved one. Research now shows that social pain results from the activation of certain components in physical pain systems. Although social, clinical, health, and developmental psychologists have each explored aspects of social pain, recent work from the neurosciences provides a coherent, unifying framework for integrative research. This edited volume provides the first comprehensive, multidisciplinary exploration of social pain. Part I examines the subject from a neuroscience perspective, outlining the evolutionary basis of social pain and tracing the genetic, neurological, and physiological underpinnings of the phenomenon. Part II explores the implications of social pain for functioning in interpersonal relationships; contributions examine the influence of painkillers on social emotions, the ability to relive past social hurts, and the relation of social pain to experiences of intimacy. Part III examines social pain from a biopsychosocial perspective in its consideration of the health implications of social pain, outlining the role of stress in social pain and the potential long-term health consequences of bullying. The book concludes with an integrative review of these diverse perspectives"--Publicity materials. (PsycINFO Database Record (c) 2010 APA, all rights reserved).
Neural Control of Renal Function, Second Edition
Author: Ulla C. Kopp
Publisher: Biota Publishing
ISBN: 161504776X
Category : Science
Languages : en
Pages : 122
Book Description
The kidney is innervated with efferent sympathetic nerve fibers reaching the renal vasculature, the tubules, the juxtaglomerular granular cells, and the renal pelvic wall. The renal sensory nerves are mainly found in the renal pelvic wall. Increases in efferent renal sympathetic nerve activity reduce renal blood flow and urinary sodium excretion by activation of α1-adrenoceptors and increase renin secretion rate by activation of β1-adrenoceptors. In response to normal physiological stimulation, changes in efferent renal sympathetic nerve activity contribute importantly to homeostatic regulation of sodium and water balance. The renal mechanosensory nerves are activated by stretch of the renal pelvic tissue produced by increases in renal pelvic tissue of a magnitude that may occur during increased urine flow rate. Under normal conditions, the renal mechanosensory nerves activated by stretch of the sensory nerves elicits an inhibitory renorenal reflex response consisting of decreases in efferent renal sympathetic nerve activity leading to natriuresis. Increasing efferent sympathetic nerve activity increases afferent renal nerve activity which, in turn, decreases efferent renal sympathetic nerve activity by activation of the renorenal reflexes. Thus, activation of the afferent renal nerves buffers changes in efferent renal sympathetic nerve activity in the overall goal of maintaining sodium balance. In pathological conditions of sodium retention, impairment of the inhibitory renorenal reflexes contributes to an inappropriately increased efferent renal sympathetic nerve activity in the presence of sodium retention. In states of renal disease or injury, there is a shift from inhibitory to excitatory reflexes originating in the kidney. Studies in essential hypertensive patients have shown that renal denervation results in long-term reduction in arterial pressure, suggesting an important role for the efferent and afferent renal nerves in hypertension.
Publisher: Biota Publishing
ISBN: 161504776X
Category : Science
Languages : en
Pages : 122
Book Description
The kidney is innervated with efferent sympathetic nerve fibers reaching the renal vasculature, the tubules, the juxtaglomerular granular cells, and the renal pelvic wall. The renal sensory nerves are mainly found in the renal pelvic wall. Increases in efferent renal sympathetic nerve activity reduce renal blood flow and urinary sodium excretion by activation of α1-adrenoceptors and increase renin secretion rate by activation of β1-adrenoceptors. In response to normal physiological stimulation, changes in efferent renal sympathetic nerve activity contribute importantly to homeostatic regulation of sodium and water balance. The renal mechanosensory nerves are activated by stretch of the renal pelvic tissue produced by increases in renal pelvic tissue of a magnitude that may occur during increased urine flow rate. Under normal conditions, the renal mechanosensory nerves activated by stretch of the sensory nerves elicits an inhibitory renorenal reflex response consisting of decreases in efferent renal sympathetic nerve activity leading to natriuresis. Increasing efferent sympathetic nerve activity increases afferent renal nerve activity which, in turn, decreases efferent renal sympathetic nerve activity by activation of the renorenal reflexes. Thus, activation of the afferent renal nerves buffers changes in efferent renal sympathetic nerve activity in the overall goal of maintaining sodium balance. In pathological conditions of sodium retention, impairment of the inhibitory renorenal reflexes contributes to an inappropriately increased efferent renal sympathetic nerve activity in the presence of sodium retention. In states of renal disease or injury, there is a shift from inhibitory to excitatory reflexes originating in the kidney. Studies in essential hypertensive patients have shown that renal denervation results in long-term reduction in arterial pressure, suggesting an important role for the efferent and afferent renal nerves in hypertension.