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Changes in 3H-Substance P Receptor Binding in the Rat Brain After
Changes in 3H-Substance P Receptor Binding in the Rat Brain After

... No significant differences were noted between the results obtained from rats that survived 4 d or 21 d after the unilateral lesion of the corpus striatum. Discussion ...
Loss of autophagy in the central nervous system causes
Loss of autophagy in the central nervous system causes

... neural cells, and that impairment of autophagy is implicated in the pathogenesis of neurodegenerative disorders involving ubiquitincontaining inclusion bodies. Macroautophagy (hereafter referred to as autophagy) is an evolutionarily conserved pathway in which the cytoplasm and organelles are engulfe ...
The neural basis for combinatorial coding in a cortical population response
The neural basis for combinatorial coding in a cortical population response

... in which each cell responds independently to its sensory inputs. Mathematically, this means that the probability of responses from the population can be decomposed as a product of probabilities for each individual cell, as in Equation 1 below, where these single-cell properties have been estimated d ...
Brain-Behavior Network Central Nervous System Cerebral
Brain-Behavior Network Central Nervous System Cerebral

... language. Other cortical areas include the motor cortex, primary sensory areas, and association areas. ...
Progress Report – Glover
Progress Report – Glover

... comprehensive study of the motor system of Oikopleura. She has used in situ hybridization to locate and chart the development of neurons versus non-neuronal cells in the caudal ganglion and caudal nerve cord, and to identify and chart the development of the motoneuron subpopulation. Combined with hi ...
PDF file
PDF file

... in the ventral visual pathway [2]. How the brain creates prediction signals in general relates to the fundamental question of how the brain represents time. Buonomano [4] discussed the two prevalent views of how this may be – “labeled lines”, in which each neuron’s firing can represent events on dif ...
Identification of neural circuits involved in female genital responses
Identification of neural circuits involved in female genital responses

... Together, these studies have identified at least three supraspinal regions essential to various aspects of female reproductive behavior, including the ventromedial nucleus of the hypothalamus (VMN), the medial preoptic area (MPO), and the midbrain periaqueductal gray (PAG). The VMN is considered an ...
The Different Neural Correlates of Action and Functional Knowledge
The Different Neural Correlates of Action and Functional Knowledge

... a scanning period was always the same throughout the experiment (AF-AF for 9 subjects, FA--FA for the other 6 subjects). The consistency with which the pairings between objects were associated with the target (yes or no) response was tested across all stimulus sets by means of a behavioral study, in ...
Neural coding of basic reward terms of animal
Neural coding of basic reward terms of animal

... According to game theory and microeconomics, the value of rewards for behavioural reactions and decisions can be assessed from the multiplicative product of magnitude and probability of the future reward (expected reward value). In addition, the delay to the future reward reduces the reward value hy ...
Short Communication - NYU Psychology
Short Communication - NYU Psychology

... and speed–accuracy tradeoff measures (McElree, Pylkkänen, Pickering, & Traxler, 2006). Importantly, several non-coercion-related explanations of the effect have been ruled out. For example, the cost does not reflect a general difficulty in combining verbs such as begin with NP complements (Traxler et ...
JEDNAK KSIAZKI
JEDNAK KSIAZKI

... head, it is the point in the eye where the optic nerve fibers leave the retina. Commonly referred to as the “blind spot,” for centuries it has been assumed to have no photoreceptor cells to respond to light stimuli. This assumption requires closer examination. The principal view assumes the existenc ...
TESIS DOCTORAL Dynamics and Synchronization in Neuronal Models
TESIS DOCTORAL Dynamics and Synchronization in Neuronal Models

... believed concept that the nervous system was a reticulum or a continuum meshwork. Using a histological staining technique, Cajal could resolve in detail the structure and concluded that the nervous system was composed of individual neurons rather than a continuum. For this discovery, Cajal was award ...
PINP: A New Method of Tagging Neuronal Populations
PINP: A New Method of Tagging Neuronal Populations

... with secondary red fluorescent antibody (Figure 2C). Figure 2D shows a typical example in which of 92 YFP positive cells observed, PV staining was co-localized in 89 (97% of cells). Thus using ChR2-YFP as a marker for PV expression, the false positive rate was only 3% (i.e. only 3% of ChR2-YFP expre ...
PDF
PDF

... ter-type layer were more weakly correlated, while neurons within different eye-specific layers had the weakest, but still significant, correlations. If each retina independently generates spontaneous bursts of activity, there should be essentially no correlation between the patterns of spontaneous a ...
Ch 15 Notes: The Autonomic Nervous System 2012
Ch 15 Notes: The Autonomic Nervous System 2012

... Somatic motor neurons innervate skeletal muscle to produce conscious, voluntary movements and the effect of a motor neuron is always excitation. Autonomic: The autonomic nervous system contains both autonomic sensory and motor neurons. Autonomic sensory neurons are associated with interoceptors. Aut ...
ChennWalshCeCortexJu..
ChennWalshCeCortexJu..

Somatic regions Limbic These functionally distinct
Somatic regions Limbic These functionally distinct

... 4) There are motor neurons located in the midbrain. What movements do those motor neurons control? (These direct outputs of the midbrain are not a subject of much discussion in the chapter.) 5) At the base of the midbrain (ventral side) one finds a fiber bundle that shows great differences in rela ...
Sample pages 2 PDF
Sample pages 2 PDF

... touted as the main neuronal information processing system, membrane – embedded receptor systems operate relatively slowly, on the order of milliseconds to seconds. This has led researchers to probe other neuronal components in search of faster information processing speeds. DNA strands, which are we ...
Multi-Layer Perceptron
Multi-Layer Perceptron

... • Perceptron can only be a linear classifier. • We can have a network of neurons (perceptron-like structures) with an input layer, one or more hidden layers, and an output layer. • Each layer consists of many neurons and the output of a layer is fed as inputs to all neurons of the next layer. ...
A non-invasive method to relate the timing of neural activity to white
A non-invasive method to relate the timing of neural activity to white

... The neurophysiological basis of variability in the latency of evoked neural responses has been of interest for decades. We describe a method to identify white matter pathways that may contribute to inter-individual variability in the timing of neural activity. We investigated the relation of the lat ...
A Computational Model of the Amygdala Nuclei`s Role in - laral
A Computational Model of the Amygdala Nuclei`s Role in - laral

... in either BLA (which is lesioned) or LA (which is activated only when food is effectively eaten). As a result, since synaptic modification depends on dopamine, no learning can takes place during second-order conditioning. ...
View PDF - CiteSeerX
View PDF - CiteSeerX

... Within the mushroom bodies c-aminobutyric acid (GABA)-immunoreactive feedback neurons are the most prominent neuron group. The plasticity of inhibitory neural activity within the mushroom body was investigated by analyzing modulations of odor responses of feedback neurons during olfactory learning i ...
Evolutionary roots offreedom
Evolutionary roots offreedom

... 4 Myelin is a white substance made of proteins and lipids that forms a sheath around the rapid-conduction fibers (axons) of the brain. It is indispensable for proper cortical integration and coordination. ...
Neuronal activity in human primary visual cortex correlates with
Neuronal activity in human primary visual cortex correlates with

... placed over posterior (occipital) areas, but it was not possible to pinpoint the precise visual area(s) from which those signals arose. Another VEP study inferred the involvement of V1 in rivalry based on the early component of the VEP signals18, but the inference about spatial localization from the ...
Nervous System Ch 9
Nervous System Ch 9

... Copyright © 2005, 2002, 1997, 1992 by Mosby, Inc. All rights reserved. ...
< 1 ... 166 167 168 169 170 171 172 173 174 ... 506 >

Metastability in the brain

In the field of computational neuroscience, the theory of metastability refers to the human brain’s ability to integrate several functional parts and to produce neural oscillations in a cooperative and coordinated manner, providing the basis for conscious activity.Metastability, a state in which signals (such as oscillatory waves) fall outside their natural equilibrium state but persist for an extended period of time, is a principle that describes the brain’s ability to make sense out of seemingly random environmental cues. In the past 25 years, interest in metastability and the underlying framework of nonlinear dynamics has been fueled by advancements in the methods by which computers model brain activity.
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