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Treatment of Thalamic Pain by Chronic Motor Cortex Stimulation
Treatment of Thalamic Pain by Chronic Motor Cortex Stimulation

... chronic motor corfex stimulation treatment, suffered from severe thalamic pain caused by stroke. Six cases had small lesions in the thalamic relay nucleus caused by thalamic lateroventral infarct (four cases) or small thalamic hemorrhage (two cases). The other case had a small lesion in the posterio ...
Further Cognitive Science
Further Cognitive Science

... “While the idea that consciousness may be clustered within either one or multiple areas of the brain may seem preposterous, this conjecture is certainly much more efficient than each cell carrying within itself the instructions for consciousness*.” ...
Chapter 13 PowerPoint - Hillsborough Community College
Chapter 13 PowerPoint - Hillsborough Community College

... – Interpretation of sensory input depends on specific location of target neurons in sensory cortex – Aspects of sensory perception: • Perceptual detection: ability to detect a stimulus (requires summation of impulses) • Magnitude estimation: intensity coded in frequency of impulses • Spatial discrim ...
Descending Tracts - Bell`s Palsy
Descending Tracts - Bell`s Palsy

... the medulla oblongata, the bundles group together to form the pyramids. At the junction of the MO and the spinal cord, most fibers cross the midline at the decussation of the pyramids and enter the lateral white column of the spinal cord to form the lateral corticospinal tract (LCST). LCST descends ...
Distribution of GABAergic neurons and axon terminals in the
Distribution of GABAergic neurons and axon terminals in the

... Neurons that utilize the neurotransmitter y-aminobutyric acid (GABA) appear to play an important role in generating many of the receptive field properties that distinguish neurons in the striate cortex from those in the lateral geniculate nucleus. When the inhibitory effects of GABA are blocked by t ...
Sensory Receptors
Sensory Receptors

... By moving the object to your finger tips where Meissner's corpuscles are abundant, you gather information about its shape, texture, and density, information your brain uses to identify the object. ...
M&E and the Frontal Lobes
M&E and the Frontal Lobes

... is called confabulation. It is most common among patients with basal forebrain lesions and among patients with additional impairment of memory ability. Another syndrome that is similar to confabulation is reduplication. Here, the patient with a frontal lobe lesion confabulates that the current envir ...
The Brainstem
The Brainstem

... • Trigeminal nucleus (CN V) – general sensations (not pain) from the face • Motor plan sent into cerebellum for coordination (this is what makes the big bulge on the ventral pons) • Tracts: – Descending motor axons from cortex and red nucleus (in midbrain) – Ascending sensory axons from body AND fac ...
SCIENCE 101: Cranial Nerve I: The Olfactory Nerve
SCIENCE 101: Cranial Nerve I: The Olfactory Nerve

... correlating smells with memories, etc, it will go through the thalamus). This means three things: 1) The olfactory system misses the thalamus because it arises from a tissue called the telencephalon, the developmental tissue that will give rise to the forebrain (and your olfactory bulbs!) in develop ...
Muscle Receptor Organs in the Crayfish Abdomen: A Student
Muscle Receptor Organs in the Crayfish Abdomen: A Student

... 7. Using the tweezers gently move the tail of the crayfish up and down at 180°, 45°, and 90° angles. Notice the difference in the recordings at each different angle. (When changing the position of the angles make sure to note the angle changes with the relevant neuronal activity on the screen. This ...
MS WORD file
MS WORD file

... 7. Using the tweezers gently move the tail of the crayfish up and down at 180°, 45°, and 90° angles. Notice the difference in the recordings at each different angle. (When changing the position of the angles make sure to note the angle changes with the relevant neuronal activity on the screen. This ...
November 2000 Volume 3 Number Supp pp 1205
November 2000 Volume 3 Number Supp pp 1205

... specific learning by the cerebellum, recent studies using a different modeling approach have provided further insights into how the cerebellum processes information. In contrast to the fundamentally hypothetical nature of top-down models, bottom-up approaches begin by building computer simulations t ...
Document
Document

... CENTRAL NERVOUS SYSTEM: Brain and Spinal Cord CHAPTER OVERVIEW: This chapter provides an overview of the embryological development of the nervous system and detailed descriptions of the structure and function of the adult brain and spinal cord. Brain functions that are identified with a particular r ...
ATTENTIONAL MODULATION OF VISUAL PROCESSING John H
ATTENTIONAL MODULATION OF VISUAL PROCESSING John H

... contrasts, spatial attention increases the firing rate by a multiplicative factor that is independent of the neuron’s tuning for such properties as orientation and direction of motion. This scaling of the response enables neurons to discriminate more reliably the features of the attended stimulus. F ...
What insights can fMRI offer into the structure and function of mid-tier visual areas?
What insights can fMRI offer into the structure and function of mid-tier visual areas?

... collection of each of these types of cells for every feature-tuned column. In V1, the most obvious feature is orientation; those columns appear to be about 200 microns in diameter in humans, so there are at least four in the smallest voxel, and typically many more. Many different features are mapped ...
cerebral cortex, sensations and movements
cerebral cortex, sensations and movements

... Fig. 6. Topography of motor and sensory areas located in anterior paracentral and, respectively, posterior paracentral gyri (medial section view of the left side of the left hemisphere). Anterior paracentral gyrus (primary somatomotor cortex) - lower extremity area consists of thigh and calf areas ( ...
File
File

... Thomas Hanna developed the clinical practice of Pandiculation, a two-­­part active movement that is neuromuscularly similar to yawning. As our primary technique, it sets HSE apart from other forms of somatic education. The pandicular response is instinctual and functions to refresh cortical awarenes ...
Histamine reduces firing and bursting of anterior and intralaminar
Histamine reduces firing and bursting of anterior and intralaminar

... rat only very few interneurons have been observed in the thalamic nuclei studied in this work [27]. On the other hand, the reduction of low-threshold bursts and the change to more regular occurring spikes not involved in bursts has been shown to be the result of depolarizing effects that inactivate ...
The hippocampo-cortical loop: Spatio
The hippocampo-cortical loop: Spatio

... (place, timing, etc.). When dealing with spatial information, the state of a neuron may code for a place (‘‘Place cell’’). Concerning temporal information, a state is corresponding to either the current information about the environment (sensory state in EC), or the prediction of this information. I ...
Skeletal Muscle
Skeletal Muscle

... of visceral reflexes that require constant monitoring by the internal body systems. Reflexes like coughing, swallowing, sneezing, or vomiting are considered to autonomic, however, these reflexes require at least some participation of the skeletal muscles. Somatic reflexes refer to those that include ...
NEUROPHYSIOLOGY OF HANNA SOMATIC EDUCATION By
NEUROPHYSIOLOGY OF HANNA SOMATIC EDUCATION By

... Thomas  Hanna  developed  the  clinical  practice  of  Pandiculation,  a  two-­‐part   active  movement  that  is  neuromuscularly  similar  to  yawning.  As  our  primary   technique,  it  sets  HSE  apart  from  other  forms  of  somatic ...
The Suppressive Field of Neurons in Lateral Geniculate Nucleus
The Suppressive Field of Neurons in Lateral Geniculate Nucleus

... the preferred stimulus diameter and the degree of size tuning (expressed as a fraction of the peak responses) and compared results for data and for model predictions. Second, to investigate the ability of the model to predict the effects of stimulus size on contrast saturation, we fitted a power law ...
Heterogeneity of the Population of Command Neurons in the Lamprey
Heterogeneity of the Population of Command Neurons in the Lamprey

... duration was 18 ⫾ 12 msec (mean ⫾ SD). For the inhibitory responses, these values were 55 ⫾ 25% and 53 ⫾ 27 msec, respectively. A segmental delay of the responses also varied considerably; on average, however, the delay was the shortest for the ipsilateral excitatory responses (Fig. 4 A), longer for ...
Sensory uncertainty decoded from visual cortex
Sensory uncertainty decoded from visual cortex

... of cortical orientation representations. We asked whether this trial-bytrial variability in the fidelity of internal knowledge was reflected in fMRI activation patterns. We addressed this question using a modelbased decoding approach to analyzing fMRI data (Online Methods). Specifically, using a gen ...
Vestibular System
Vestibular System

... Axial muscles and proximal muscles of the extremeties; therefore, adjusts the contraction of muscles that oppose the force of gravity Medial Vestibulospinal Tract (MVST): arises from the caudal half of the VCN (especially medial nucleus); may have bilateral distribution in the caudal medulla but is ...
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Feature detection (nervous system)

Feature detection is a process by which the nervous system sorts or filters complex natural stimuli in order to extract behaviorally relevant cues that have a high probability of being associated with important objects or organisms in their environment, as opposed to irrelevant background or noise. Feature detectors are individual neurons – or groups of neurons – in the brain which code for perceptually significant stimuli. Early in the sensory pathway feature detectors tend to have simple properties; later they become more and more complex as the features to which they respond become more and more specific. For example, simple cells in the visual cortex of the domestic cat (Felis catus), respond to edges – a feature which is more likely to occur in objects and organisms in the environment. By contrast, the background of a natural visual environment tends to be noisy – emphasizing high spatial frequencies but lacking in extended edges. Responding selectively to an extended edge – either a bright line on a dark background, or the reverse – highlights objects that are near or very large. Edge detectors are useful to a cat, because edges do not occur often in the background “noise” of the visual environment, which is of little consequence to the animal.
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