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Rods Cones
Rods Cones

... they are functionally blind must use conscious strategies (e.g., closing their eyes) to break fixation from one object inability to perceive more than one object at a time during a single fixation even when two objects occupy the same location in the visual field (simultagnosia) – patient can see a ...
Imitating the Brain with Neurocomputer A New Way towards Artificial
Imitating the Brain with Neurocomputer A New Way towards Artificial

... the structure of the brain structure (mainly neural networks of the cerebral cortex). Even though our objective is to realize intelligent functions, we need go back to the structural level, that is, to firstly make out the same structure and then test if it could produce the anticipated function. Ju ...
26_1986 Wasilewska
26_1986 Wasilewska

... literature, to our knowledge, there are few comparative studies analysing the morphometric structure of the nuclei of the corpus striatum belonging to different orders of mammals (15, 16). In this study, the St and GP in representatives of four different mammalian orders were morphometrically compar ...
Messages from the Brain Connectivity Regarding Neural Correlates
Messages from the Brain Connectivity Regarding Neural Correlates

... zational principles of the cerebral cortex [11-16] and are applied in almost all cognitive domains [17]. They look like two sides of the same coin, since we cannot understand the brain function seeing only one aspect between these two features. Functional segregation ...
Convergent grey and white matter evidence of
Convergent grey and white matter evidence of

... FTD. More objective measures of disinhibition have been applied to behavioural variant FTD, notably the Stroop, Go/No-go and Stop Signal tasks. Although impaired on the Stroop test, patients with behavioural variant FTD perform at an equivalent level to patients with Alzheimer’s disease (Pachana et ...
L4-Asending tract
L4-Asending tract

... 6-Which is true of the spinothalamic tracts? A) contain primary neurons that enter the spinal cord and synapse with secondary neurons B) contain secondary neurons that cross the spinal cord, ascend to the thalamus, and synapse with tertiary neurons. C) contain tertiary neurons that project to the so ...
pdf - Olin Neuropsychiatry Research Center
pdf - Olin Neuropsychiatry Research Center

... for which no behavioural response was required, leading Halgren et al. to propose that these areas are specialised for the orientation of attention to salient stimuli, regardless of whether or not they are overtly attended. Using event-related fMRI during auditory and visual oddball detection, Kiehl ...
Brain networks underlying episodic memory retrieval
Brain networks underlying episodic memory retrieval

... [23], recollection was indexed by the accurate discrimination of word pairs according to whether the constituent words had been studied on the same or on different study trials (an associative recognition test). Hippocampal activity was greater when elicited by recollected than by unrecollected pair ...
Does Loss of Nerve Growth Factor Receptors Precede Loss of
Does Loss of Nerve Growth Factor Receptors Precede Loss of

... Within cell bodies,the reaction product wasconcentratedat the neuronal membrane and in the perinuclear area. No immunostaining was observed in the striatum. In brains from AD patients, immunoreactivity was globally decreasedin the nucleusbasalisof Meynert. Some of the surviving immunostained neurons ...
Altered States of Consciousness
Altered States of Consciousness

... Adapted from How the Brain Might Work: A New Theory of Consciousness By SANDRA BLAKESLEE ...
Contributions and challenges for network models in cognitive
Contributions and challenges for network models in cognitive

... also been instrumental in understanding the role of structural brain networks in generating spatially and temporally organized brain activity. Despite these contributions, network models are subject to limitations in methodology and interpretation, and they face many challenges as brain connectivity ...
Dopamine`s Actions in Primate Prefrontal Cortex
Dopamine`s Actions in Primate Prefrontal Cortex

... persistent firing. It should be noted that this persistent ...
2-Motor System2009-03-20 18:254.4 MB
2-Motor System2009-03-20 18:254.4 MB

... to perform a motor task into a series of motor command that will do the task. ...
Orbitofrontal Cortex and Human Drug Abuse: Functional Imaging
Orbitofrontal Cortex and Human Drug Abuse: Functional Imaging

The Neurobiology of Addiction
The Neurobiology of Addiction

... by the mesolimbic dopamine system (Wise and Leeb 1993). The process of sensitization, whereby an enhanced activation of dopamine function occurs in the mesolimbic system, may represent a within-systems mechanism of neuroadaptation. For example, injections of opiates or amphetamine directly into the ...
Introduction to the Nervous System
Introduction to the Nervous System

... Twelve pairs of cranial nerves emerge from the inferior surface of the brain. All of these nerves, except the vagus nerve, pass through foramina of the skull to innervate structures in the head, neck, and facial region. The cranial nerves are designated both by name and by Roman numerals, according ...
E1 Lec 11 Disorders of Basal Ganglia
E1 Lec 11 Disorders of Basal Ganglia

...  Basal ganglia circuit ...
Short-Lasting Classical Conditioning Induces
Short-Lasting Classical Conditioning Induces

... 1990; Recanzone et al., 1992a; Edeline et al., 1993;Recanzone et al., 1993; Weinberger et al., 1993). The process of learning may influence the properties of neurons at all levels of the brain (also see Dudai, 1989). A permanent and stimulus-specific change in neuronal properties can be regarded as ...
cortex
cortex

... nineteen fifties expanded this concept and added subcortical gray masses and various interconnecting pathways with the cortex of the limbic lobe into what he termed the "limbic system". The limbic lobe is purely cortical in terms of structure and contains nearly all of the non-isocortical areas of t ...
Antipsychotic drug treatment alters expression of mRNAs
Antipsychotic drug treatment alters expression of mRNAs

... to interrupt cognitive function in mice and one-tenth that reported to induce catalepsy.28 Brains were rapidly removed and placed on ice. The striatum and frontal cortex were dissected out and placed in ice-cold phosphate-buffered saline. These striata and cortical samples were pooled and the total ...
Motor disorders
Motor disorders

Direct and Indirect Activation of Cortical Neurons by Electrical
Direct and Indirect Activation of Cortical Neurons by Electrical

Nervous System
Nervous System

... – motor or efferent neuron: - conducts nerve impulses from the brain or spinal cord to the effector organ (muscles or glands). usually multipolar in structure. - accelerator motor neurons cause an increase of activity in the effector organ; while inhibitory motor neurons cause a decrease of activity ...
Motivation - Blackwell Publishing
Motivation - Blackwell Publishing

... The possession of the OB gene appears to regulate whether or not obesity occurs double recessive the two copies of a in the mouse. More specifically, genetically obese mice that are double recessive for gene in an animal are both recessive the obesity gene (i.e. ob ob mice), and thereby lack the OB ...
Zola-Morgan et al. 1986
Zola-Morgan et al. 1986

... 1967; Muramoto et al., 1979; Van Buren and Borke, 1972; Woods et al., 1982). However, the assessment of memory functions in these cases was often based on anecdotal reports (but see Damasio et al., 1985a). In addition, damage in many cases was not confined to the hippocampus but extended into the am ...
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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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