Sensory and Motor Mechanisms
... Processing of sensory information can occur before, during, and after transmission of action potentials to the CNS. In many cases, the integration of sensory information begins as soon as the information is received. Receptor potentials produced by stimuli delivered to different parts of a sensory r ...
... Processing of sensory information can occur before, during, and after transmission of action potentials to the CNS. In many cases, the integration of sensory information begins as soon as the information is received. Receptor potentials produced by stimuli delivered to different parts of a sensory r ...
Somatic sensation pain
... heat, bacterial infection, tissue ischemia etc Special importance of chemical painful stimulus Bradykinin is responsible for causing pain following tissue damage Mechanism of pain formation Pain intensity Correlates to local increase of K ions concentration & proteolytic enzymes that directly attack ...
... heat, bacterial infection, tissue ischemia etc Special importance of chemical painful stimulus Bradykinin is responsible for causing pain following tissue damage Mechanism of pain formation Pain intensity Correlates to local increase of K ions concentration & proteolytic enzymes that directly attack ...
Phantom Limbs and Neural Plasticity
... the mirror for 2 weeks resulted in a permanent and complete disappearance of the phantom arm and elbow (and a “telescoping” of fingers into the stump) for the first time in 10 years. The associated pain in the elbow and wrist also vanished. This may be the first known instance of a successful amputa ...
... the mirror for 2 weeks resulted in a permanent and complete disappearance of the phantom arm and elbow (and a “telescoping” of fingers into the stump) for the first time in 10 years. The associated pain in the elbow and wrist also vanished. This may be the first known instance of a successful amputa ...
Somatic and Special Senses
... http://thesalience.files.wordpress.com/2013/05/taste-buds-fungiform-papillae-vallate-papilla-gustatory-hairs-stratified-squamous-epithelium-of-tongue-taste-fibers-of-cranial-nerves.jpg ...
... http://thesalience.files.wordpress.com/2013/05/taste-buds-fungiform-papillae-vallate-papilla-gustatory-hairs-stratified-squamous-epithelium-of-tongue-taste-fibers-of-cranial-nerves.jpg ...
Clinical Connections
... • Motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes (muscle tone) and exaggerated tendon jerks • Spasticity often develops in clinical disorders with UMN damage such as stroke, multiple sclerosis, and spinal cord injury ...
... • Motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes (muscle tone) and exaggerated tendon jerks • Spasticity often develops in clinical disorders with UMN damage such as stroke, multiple sclerosis, and spinal cord injury ...
An introduction to pain pathways and mechanisms
... Nociceptors are the specialised sensory receptors responsible for the detection of noxious (unpleasant) stimuli, transforming the stimuli into electrical signals, which are then conducted to the central nervous system. They are the free nerve endings of primary afferent Aδ and C fibres. Distributed ...
... Nociceptors are the specialised sensory receptors responsible for the detection of noxious (unpleasant) stimuli, transforming the stimuli into electrical signals, which are then conducted to the central nervous system. They are the free nerve endings of primary afferent Aδ and C fibres. Distributed ...
PDF
... of alternative models which propose that optic axons reach visual centres as a direct consequence of contact guidance along so-called pioneering fibres (Horder & Martin, 1978). Horder and co-workers have proposed that simple mechanical guidance during development can account for the formation of con ...
... of alternative models which propose that optic axons reach visual centres as a direct consequence of contact guidance along so-called pioneering fibres (Horder & Martin, 1978). Horder and co-workers have proposed that simple mechanical guidance during development can account for the formation of con ...
Kandel ch. 42 - Weizmann Institute of Science
... regions, each of which receives projections from different portions of the brain and spinal cord and projects to different motor systems. These features suggest that regions of the cerebellum perform similar computational operations but on different inputs. The cerebellum influences the motor system ...
... regions, each of which receives projections from different portions of the brain and spinal cord and projects to different motor systems. These features suggest that regions of the cerebellum perform similar computational operations but on different inputs. The cerebellum influences the motor system ...
subclAViAn stEAl sYndRoME And oPtic nERVE dAMAGE
... ischemia. Visual symptoms secondary to vestibular dysfunction and/or nystagmus include a sensation of objects moving or the inability to focus as well as monocular or binocular visual loss. Diplopia occurs in 19% of the cases. The most frequent neurologic symptom is dizziness or vertigo, usually des ...
... ischemia. Visual symptoms secondary to vestibular dysfunction and/or nystagmus include a sensation of objects moving or the inability to focus as well as monocular or binocular visual loss. Diplopia occurs in 19% of the cases. The most frequent neurologic symptom is dizziness or vertigo, usually des ...
Multiple Sclerosis: Pain
... impairment in MS. In fact, pain can cause serious disability in its own right. About 65% of MS patients experience a broad range of painful syndromes. Pain I. ...
... impairment in MS. In fact, pain can cause serious disability in its own right. About 65% of MS patients experience a broad range of painful syndromes. Pain I. ...
(X) rotin - University of Toronto
... a mature nerve until one year of age, nine months behind their wild-type and Ptprs+/– counterparts. Histologic analysis suggested the decreased velocities were, in part, secondary to developmental delay. Electron microscopy and morphometric analysis revealed a significantly increased proportion of s ...
... a mature nerve until one year of age, nine months behind their wild-type and Ptprs+/– counterparts. Histologic analysis suggested the decreased velocities were, in part, secondary to developmental delay. Electron microscopy and morphometric analysis revealed a significantly increased proportion of s ...
A comparision of Hodgkin-Huxley and soliton neural theories
... Hodgkin and Huxley. With the aid of ionic substitution, they demonstrated that this net current could be separated into two distinct components, a fast inward current carried by Na+ ions, and a more slowly activating outward current carried by K+ ions. Using ingenious voltage-clamp protocols, they c ...
... Hodgkin and Huxley. With the aid of ionic substitution, they demonstrated that this net current could be separated into two distinct components, a fast inward current carried by Na+ ions, and a more slowly activating outward current carried by K+ ions. Using ingenious voltage-clamp protocols, they c ...
L-E Chap 6 2016
... Medial pain system: divergent ascending network of neurons Uses several pathways with variable numbers of projection neurons, not a threeneuron pathway like fast pain. Activity of the medial pain system elicits affective, motivational, withdrawal, arousal, and autonomic responses. Information is not ...
... Medial pain system: divergent ascending network of neurons Uses several pathways with variable numbers of projection neurons, not a threeneuron pathway like fast pain. Activity of the medial pain system elicits affective, motivational, withdrawal, arousal, and autonomic responses. Information is not ...
Neuromuscular Transmission - Dr. Logothetis
... sites located at the interfaces of the αδ and αγ subunits. Once acetylcholine is bound to a receptor, the channel is opened virtually instantaneously, probably within a few microseconds. Studies measuring the permeability of different small cations suggest that the open ion channels is, at its narro ...
... sites located at the interfaces of the αδ and αγ subunits. Once acetylcholine is bound to a receptor, the channel is opened virtually instantaneously, probably within a few microseconds. Studies measuring the permeability of different small cations suggest that the open ion channels is, at its narro ...
Human frequency-following response: representation of pitch
... hypothesis. In their electrophysiological study, Cariani and Delgutte (1996) recorded responses of cat auditory nerve ¢bers and combined interval distributions from many ¢bers to form an estimate of population interval distribution in the entire auditory nerve. Many deep correspondences between feat ...
... hypothesis. In their electrophysiological study, Cariani and Delgutte (1996) recorded responses of cat auditory nerve ¢bers and combined interval distributions from many ¢bers to form an estimate of population interval distribution in the entire auditory nerve. Many deep correspondences between feat ...
Anatomy and pathology of the pontocerebellar fibers in patients with
... 55-year-old man with history of uncontrolled diabetes mellitus, presented to the emergency room for intermittent right face and arm numbness/tingling, right facial droop, and moderate dysarthria/stuttering. A stroke code was initiated and the patient was treated with tPA, administered 2 hours and 10 ...
... 55-year-old man with history of uncontrolled diabetes mellitus, presented to the emergency room for intermittent right face and arm numbness/tingling, right facial droop, and moderate dysarthria/stuttering. A stroke code was initiated and the patient was treated with tPA, administered 2 hours and 10 ...
Sources
... respectively. However, they did not publicize their discovery. Four years later, in Boston, on October 16, 1846, William T.G. Morton conducted the first publicized demonstration of general anesthesia for surgical operation using ether. The dramatic success of that exhibition led the operating surgeo ...
... respectively. However, they did not publicize their discovery. Four years later, in Boston, on October 16, 1846, William T.G. Morton conducted the first publicized demonstration of general anesthesia for surgical operation using ether. The dramatic success of that exhibition led the operating surgeo ...
physiological reviews
... disagreement in the past as to the protein content of perilymph and of endolymph also, but it now seems (45, 152, 219, 218) that endolymph contains no more protein than cerebrospinal fluid, and that perilymph may contain twice as much. The perilymphatic space communicates with the cerebrospinal spac ...
... disagreement in the past as to the protein content of perilymph and of endolymph also, but it now seems (45, 152, 219, 218) that endolymph contains no more protein than cerebrospinal fluid, and that perilymph may contain twice as much. The perilymphatic space communicates with the cerebrospinal spac ...
Chapter 25: The Spine
... • Pain in your neck? Numbness, tingling, burning? • Can you move your ankles and toes? • Do you have equal strength in both hands? ...
... • Pain in your neck? Numbness, tingling, burning? • Can you move your ankles and toes? • Do you have equal strength in both hands? ...
Spinal Cord Neural Modeling for Clinical Applications
... which were used for calibration and validation purposes. The author would like to acknowledge that, were it not for Dr. Arle and Dr. Shils as well as his Brandeis faculty sponsor Dr. Miller, this research and the resulting thesis would not have been possible. The author is tremendously grateful for ...
... which were used for calibration and validation purposes. The author would like to acknowledge that, were it not for Dr. Arle and Dr. Shils as well as his Brandeis faculty sponsor Dr. Miller, this research and the resulting thesis would not have been possible. The author is tremendously grateful for ...
NSS214 - National Open University of Nigeria
... The central nervous system (CNS) consists of the brain and spinal cord. They receive input from sensory neurons, and direct the activity of motor neurons. Association neurons are present to "associate" appropriate motor responses with sensory stimuli. The early embryo contains an embryonic tissue la ...
... The central nervous system (CNS) consists of the brain and spinal cord. They receive input from sensory neurons, and direct the activity of motor neurons. Association neurons are present to "associate" appropriate motor responses with sensory stimuli. The early embryo contains an embryonic tissue la ...
Neurons and Neurotransmission with Nerve slides
... energy into action potentials that the nervous system can process •Receptor cells in the eye turn light into a neural impulse the brain understands. ...
... energy into action potentials that the nervous system can process •Receptor cells in the eye turn light into a neural impulse the brain understands. ...
Afferent Fiber Remodeling in the Somatosensory Thalamus of Mice
... receptive fields, and extraterritorial pain behavior all concomitantly developed within a week and lasted more than three months after the transection. Our findings, thus, indicate a strong linkage between these plastic changes after peripheral sensory nerve injury, which may provide a neural circui ...
... receptive fields, and extraterritorial pain behavior all concomitantly developed within a week and lasted more than three months after the transection. Our findings, thus, indicate a strong linkage between these plastic changes after peripheral sensory nerve injury, which may provide a neural circui ...
Low Back Pain - For Medical Professionals
... Internal Disc Disruption (IDD) › Pathology of IDD (cont.) Hyperalgesic discs cause chronic pain, worse with mechanical stress and produce a painful response with minimal stimulation on discography › Clinical Findings Acute or chronic pain in low back or buttocks Often precipitated by a torsion ...
... Internal Disc Disruption (IDD) › Pathology of IDD (cont.) Hyperalgesic discs cause chronic pain, worse with mechanical stress and produce a painful response with minimal stimulation on discography › Clinical Findings Acute or chronic pain in low back or buttocks Often precipitated by a torsion ...
Microneurography
Microneurography is a neurophysiological method employed by scientists to visualize and record the normal traffic of nerve impulses that are conducted in peripheral nerves of waking human subjects. The method has been successfully employed to reveal functional properties of a number of neural systems, e.g. sensory systems related to touch, pain, and muscle sense as well as sympathetic activity controlling the constriction state of blood vessels. To study nerve impulses of an identified neural system, a fine tungsten needle electrode is inserted into the nerve and connected to a high gain recording amplifier. The exact position of the electrode tip within the nerve is then adjusted in minute steps until the electrode discriminates impulses of the neural system of interest. A unique feature and a significant strength of the microneurography method is that subjects are fully awake and able to cooperate in tests requiring mental attention, while impulses in a representative nerve fibre or set of nerve fibres are recorded, e.g. when cutaneous sense organs are stimulated or subjects perform voluntary precision movements.