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Control and Coordination
Control and Coordination

... All these activities occur in a coordinated manner, and if any of these activities misses or does not occur in time then the body will not get nutrition. In case of animals, including man, the chemicals produced by ductless (endocrine) glands also bring about coordination. This coordination by chemi ...
Resection of focal cortical dysplasia located in the upper pre
Resection of focal cortical dysplasia located in the upper pre

... left intact. Regions with histological evidence of FCD with balloon cells (type IIb) and increased intensity on FLAIR MR imaging are not co-localized with function (Marusic et al., 2002). Resection of rolandic type II FCD based on neurophysiological and imaging results is followed only by transient ...
ChennWalshCeCortexJu..
ChennWalshCeCortexJu..

... apparently distinct from the underlying striatum (Figs 3 and 4), in a region similar to the position normally occupied by the subventricular zone. In some sections, these aggregations of neurons appears separate and distinct from the overlying cerebral cortex (Figs 3A,B and 4D,E,G) although, in othe ...
Hyperfrontality and hypoconnectivity during refreshing in
Hyperfrontality and hypoconnectivity during refreshing in

... working memory capacity is exceeded. Patients with schizophrenia, compared to healthy subjects, would show a leftward shift in the Ushaped curve leading to PFC hyper-activations when performing lowload working memory tasks and PFC hypo-activations when performing high-load working memory tasks in co ...
Chapter 49 - Nervous Systems
Chapter 49 - Nervous Systems

... !  The two hemispheres work together by communicating through the fibers of the corpus callosum ...
Document
Document

... Primary somatosensory cortex ...
Chapter 2 - TC Online
Chapter 2 - TC Online

... • Immune system: cells, organs, and chemicals of the body that respond to attacks from diseases, infections, and injuries – Negatively affected by stress ...
Asymmetry of the Neuroendocrine System
Asymmetry of the Neuroendocrine System

... hemisphere. On the basis of this fundamental and subsequent observations, a classic theory of asymmetry was formulated comprising the existence of a single dominant (left) hemisphere and the presence of asymmetry exclusively in humans, in the cerebral cortex. The theory of asymmetry discouraged scie ...
The continuous performance test: a window on
The continuous performance test: a window on

... those with left hemisphere damage (DeRenzi & Faglioni, 1965; Howes & Boller, 1975; Tartaglione, Birio, Manzino, Spadevecchia, & Favale, 1986). The idea of greater right hemisphere involvement is also evident in Posner and Petersen’s (1990) model as well as other theories that are specific to right h ...
before ethics and morality
before ethics and morality

... The studies of Rene Spitz on the effects of “hospitalism” on infants raised in a foundling home have documented that such infants can die when emotional deprivation is severe. This has been called “marasmus” and occurs even when the physical, nutritional, and medical care of the infant is satisfact ...
The dual-pathway model of auditory signal
The dual-pathway model of auditory signal

... blood-oxygen-level dependent (BOLD) signal in bilateral posterior temporal areas, inferior and superior parietal cortices compared with the pitch judgment. This study provides the direct evidence that the neural systems involved in identifying and localizing auditory objects are functionally and neu ...
Mechanisms underlying working memory for novel information
Mechanisms underlying working memory for novel information

... neurons [13] demonstrate how the Alonso current can underlie the sustained delay period spiking in the entorhinal cortex seen with extracellular unit recording in rats and monkeys during the performance of delayed matching tasks [10,30]. These detailed models extended earlier models showing that aft ...
A new view of the motor cortex
A new view of the motor cortex

... closely resembled common categories of actions from the monkey’s normal repertoire. For example, when sites within one region of the map were stimulated, a hand-to-mouth movement was evoked (Graziano et al., 2002; Graziano et al., 2005). The movement included a closure of the hand into an apparent ...
This article was originally published in a journal published by
This article was originally published in a journal published by

... studied with localized injections of the toxin saporin, which is conjugated with antibodies to cholinergic neurons so that it is taken up and causes selective cell death of cholinergic neurons innervating the structure that was injected. Selective lesions of the cholinergic innervation of entorhinal ...


... Hikosaka, 1997). Dopamine’s role in these behaviors appears to be as modulator between two behavioral extremes. When dopaminergic activity is high, behavior is focused, and in extremes, stereotypic. When dopaminergic activity is low, behavior is unfocused and fails to persist. This systematic relati ...
A double-dissociation of English past
A double-dissociation of English past

... Objectives: Evidence of systematic double-dissociations of neural activity associated with the generation of regular and irregular past tense in healthy individuals may prove decisive in distinguishing between single- and dual-route models of morphological processing, because the former (connectioni ...
Critical Periods:
Critical Periods:

... – this strengthening process involves increasing synaptic input and the dendritic complexity of neurons: 1) more synapses, 2) more dendritic spines, 3) increase in length and branching of dendrites ...
Memory formation: from network structure to neural dynamics
Memory formation: from network structure to neural dynamics

... structural changes, extensive modelling efforts must also be done, where one can directly observe how known structural changes induce differences in functional relationships between neurons. While the knowledge gained from this modelling does not give direct evidence linking the experimentally obser ...
Superior Parietal Cortex Is Critical for the Manipulation of
Superior Parietal Cortex Is Critical for the Manipulation of

... In recent years, theoretical perspectives on posterior parietal function have evolved beyond the traditional visuospatial processing models to include more diverse cognitive operations, such as long-term and working memory. However, definitive neuropsychological evidence supporting the superior pari ...
Lecture VIII. Spinal Cord
Lecture VIII. Spinal Cord

... • Nomenclature often origin and target, i.e., CorticoSpinal Tract = from cortex to spinal cord September 27, 2010 ...
Basal ganglia discharge abnormalities in Parkinson`s disease
Basal ganglia discharge abnormalities in Parkinson`s disease

... parkinsonian tremor may directly result from synchronized oscillatory bursting in the basal ganglia, studies of the correlation or coherence between tremor and basal ganglia oscillations have not been conclusive, perhaps resulting from the fact that different limbs of parkinsonian patients may engag ...
Tau pathology does not affect experience-driven single
Tau pathology does not affect experience-driven single

... Intraneuronal neurofibrillary tangles (NFTs) – a characteristic pathological feature of Alzheimer’s and several other neurodegenerative diseases – are considered a major target for drug development. Tangle load correlates well with the severity of cognitive symptoms and mouse models of tauopathy are ...
ling411-13 - Rice University
ling411-13 - Rice University

... linked, they should show similar response properties in neurophysiological experiments. “If the neurons of the functional web are necessary for the optimal processing of the represented entity, lesion of a significant portion of the network neurons must impair the processing of this entity. This sho ...
Chapter_013
Chapter_013

... • Columns of gray matter extend the length of the cord • Consists predominantly of cell bodies of interneurons and motor neurons • In transverse section, looks like an H with the limbs being called the anterior, posterior, and lateral horns of gray matter; cross-bar of H is the gray commissure ...
Chapter_013
Chapter_013

... • Columns of gray matter extend the length of the cord • Consists predominantly of cell bodies of interneurons and motor neurons • In transverse section, looks like an H with the limbs being called the anterior, posterior, and lateral horns of gray matter; cross-bar of H is the gray commissure ...
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Aging brain

Age is a major risk factor for most common neurodegenerative diseases, including Mild cognitive impairment, Alzheimer's disease, cerebrovascular disease, Parkinson's disease and Lou Gehrig's disease. While much research has focused on diseases of aging, there are few informative studies on the molecular biology of the aging brain (usually spelled ageing brain in British English) in the absence of neurodegenerative disease or the neuropsychological profile of healthy older adults. However, research does suggest that the aging process is associated with several structural, chemical, and functional changes in the brain as well as a host of neurocognitive changes. Recent reports in model organisms suggest that as organisms age, there are distinct changes in the expression of genes at the single neuron level. This page is devoted to reviewing the changes associated with healthy aging.
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