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Spinal Cord
Spinal Cord

... the best choices because the extensive vertebral column injuries are not consistent with the typical presentation of any of these entities. ...
Transcranial Magnetic Stimulation: Decomposing the
Transcranial Magnetic Stimulation: Decomposing the

... from premotor, prefrontal and parietal cortices can also be activated by TMS over M1. Hence, depending on the intensity of stimulation and the specific structures activated by TMS, a series of descending volleys occurs along the CS neurons, that are due to the direct (D) or indirect (I) activation o ...
11-1 FUNCTIONS OF THE NERVOUS SYSTEM 1. Sensory input
11-1 FUNCTIONS OF THE NERVOUS SYSTEM 1. Sensory input

... 1) Sensory input can be at the conscious level, such as touch, taste, smell, sight, etc. 2) Sensory input can be at the unconscious level, such as blood pressure, blood oxygen levels, etc. B. The motor, or efferent, division carries action potentials FROM the CNS to effector organs and can be divide ...
Kandel chs. 17, 18 - Weizmann Institute of Science
Kandel chs. 17, 18 - Weizmann Institute of Science

... sensation and motor control of the trunk and limbs, the brain stem is concerned with sensation from and motor control of the head, neck, and face. The brain stem is also the site of entry for information from several specialized senses, such as hearing, balance, and taste. Motor neurons in the brain ...
Central nervous System Lesions Leading to Disability
Central nervous System Lesions Leading to Disability

... which we put proximal and distal muscles are reflected in differences in the fine organization of the connections of the ventromedial and dorsolateral systems. The ventromedial group of pathways descends in the ipsilateral ventral columns of the spinal cord and terminates predominantly on medial mot ...
J Comp Physiol (1982) 149: 179 193
J Comp Physiol (1982) 149: 179 193

... whether the transient excitation of VS-cells is caused by the increase or decrease of brightness which occur almost simultaneously in flashes of 20 µs duration. Step responses are appropriate to decide this question, and have been recorded in 21 VSpenetrations. Since impulse responses decline within ...
C ontribution of the anterior cingulate cortex to laser
C ontribution of the anterior cingulate cortex to laser

... Abstract The emotional component of nociception is seldom distinguished from pain behavioral testing. The aim of the present study was to develop a behavioral test that indicates the emotional pain responses using the classical conditioning paradigm. The role of the anterior cingulate cortex (ACC) i ...
Luczak, 2015 - University of Lethbridge
Luczak, 2015 - University of Lethbridge

... is thought to be important for information processing in a large number of cortical areas (including visual2,3, auditory 4,5, somato­ sensory 6 and olfactory 7 cortices and the hippocampus8,9). Of course, the spike times of any one neuron are just one component of much-larger, population-level activ ...
Differential effects of 10-Hz and 40
Differential effects of 10-Hz and 40

... Procedure A within-subject experimental design was used. There were three stimulation conditions and during each type of stimulation, participants completed two spatial ...
A review of alpha activity in integrative brain function: Fundamental
A review of alpha activity in integrative brain function: Fundamental

... and information flow between neurons and glia all contribute to information processing. Revisiting the neuron doctrine, these authors suggest that future research beyond its limits may lead to new insights into the unique capabilities of the human brain. The functional significance of oscillatory neur ...
GAIT AND LOCOMOTION
GAIT AND LOCOMOTION

... Altering locomotion Cortex • During normal level path unobstructed locomotion the cortical level involvement is minimal: when the animal is required to go over barriers in the travel path or is constrained to place its paws on a specific location (such as rungs of a ladder) the intensity (but not t ...
Neural Coding and Auditory Perception
Neural Coding and Auditory Perception

... stimulus from the responses of a single fiber to a series of complex tones as a function of their fundamental frequency (F0). Scaling invariance implies that the spatio-temporal response pattern is entirely determined by the ratio of fiber CF to stimulus F0. The left panels in Fig. 1 show the tempor ...
Central Nervous System - Spinal Cord, Spinal
Central Nervous System - Spinal Cord, Spinal

... components of white mater are divided into columns. 1. The posterior white column- lies between the posterior gray horns and posterior median sulcus -has ascending tracts only- carry sensory information from the spinal cord to the brain. * tracts-bundles of myelinated axons in CNS (brain and spinal ...
PSYB1 Biopsychology Short Qs JM09 December
PSYB1 Biopsychology Short Qs JM09 December

... AO1 One mark for identification of a correct technique. Two marks for identification of a correct technique but brief description of the procedure and/or method. Three marks for identification of a correct technique with clear description of the procedure and/or method. Likely answers: EEG; CAT/PET/ ...
07. Pons Internal Features 0102010-10-01 05:141.9
07. Pons Internal Features 0102010-10-01 05:141.9

... (cell bodies of primary sensory neurons and the only such cells in the central nervous system). • The peripheral fibers of the unipolar neurons is distributed through the mandibular division of the nerve to proprioceptive endings in the muscles of mastication ...
Development of the Nervous System
Development of the Nervous System

... The white matter of the spinal cord contains short pathways which interconnect adjacent segments of the spinal cord, and longer tracts which convey information to and from the brain. White matter consists almost totally of myelinated motor and sensory axons. The spinal cord is clothed in 3 layers of ...
Visual behaviour mediated by retinal projections directed to the
Visual behaviour mediated by retinal projections directed to the

... adding them last to this minimal adequate model. When there was signi®cant overdispersion using Poisson errors, we re-scaled the model using Pearson's x2/d.f. (where d.f. is degrees of freedom)22. Means 6 standard errors are reported. We assumed that foraging effort was proportional to percentage ti ...
Retinal ganglion cell synchronization by fixational eye movements
Retinal ganglion cell synchronization by fixational eye movements

... largely reduced, however, because this system responds mainly to changes7,8. This is consistent with the observation that visual perception fades away when the image of an object is stabilized artificially on the retina9,10. Therefore, during normal fixation in a stationary visual world, relative im ...
cortex
cortex

... Apraxia. Apraxia is the inability to execute a normal volitional act, even though the motor system and mental status are relatively intact and the person is not paralyzed. The lesions affect cerebral areas around or distant from the primary motor area but do not involve it. The apraxias differ from ...
Neural Integration I: Sensory Pathways and the Somatic Nervous
Neural Integration I: Sensory Pathways and the Somatic Nervous

... • After the sensations have been sorted and processed, they are relayed to primary sensory cortex ...
The Organization of the Frontal Motor Cortex
The Organization of the Frontal Motor Cortex

... examined and the functional properties of the areas connected with one another are considered, it emerges that the various frontal motor areas can be grouped into two major classes: 1) areas that transform sensory information into motor commands and 2) areas that are involved in controlling sensory- ...
A direct quantitative relationship between the functional properties of
A direct quantitative relationship between the functional properties of

... measured using fMRI remains elusive. One innovative recent experiment showed that an opponent motion stimulus elicits similar aggregate multi-neuron responses in macaque V5 and BOLD contrast responses in human V5 (ref. 13). However, this comparison was qualitative rather than quantitative, and focus ...
pdf
pdf

... University of Regensburg, Regensburg, Germany ...
Amyotrophic Lateral Sclerosis (ALS)
Amyotrophic Lateral Sclerosis (ALS)

... routine motor studies of the median, ulnar, peroneal and tibial nerves ...
Nervous System Part 4
Nervous System Part 4

... – Maintains daily necessary body functions – Remember as the “D” division • digestion, defecation, and diuresis ...
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Evoked potential

An evoked potential or evoked response is an electrical potential recorded from the nervous system of a human or other animal following presentation of a stimulus, as distinct from spontaneous potentials as detected by electroencephalography (EEG), electromyography (EMG), or other electrophysiological recording method.Evoked potential amplitudes tend to be low, ranging from less than a microvolt to several microvolts, compared to tens of microvolts for EEG, millivolts for EMG, and often close to a volt for ECG. To resolve these low-amplitude potentials against the background of ongoing EEG, ECG, EMG, and other biological signals and ambient noise, signal averaging is usually required. The signal is time-locked to the stimulus and most of the noise occurs randomly, allowing the noise to be averaged out with averaging of repeated responses.Signals can be recorded from cerebral cortex, brain stem, spinal cord and peripheral nerves. Usually the term ""evoked potential"" is reserved for responses involving either recording from, or stimulation of, central nervous system structures. Thus evoked compound motor action potentials (CMAP) or sensory nerve action potentials (SNAP) as used in nerve conduction studies (NCS) are generally not thought of as evoked potentials, though they do meet the above definition.
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