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The speed of learning instructed stimulus
The speed of learning instructed stimulus

... Keywords: Rapid instructed task learning, Pre-frontal cortex, Inferior-temporal Cortex, Hippocampus, synaptic learning Abstract Humans can learn associations between visual stimuli and motor responses from just a single instruction. This is known to be a fast process, but how fast is it? To answer t ...
Swim Initiation Neurons in Tritonia diomedea1
Swim Initiation Neurons in Tritonia diomedea1

... 1996). The available data are consistent with there being just one DRI on each side of the brain (Frost and Katz, 1996). The discovery of DRI completed the description of a continuous synaptic pathway from the afferent to the efferent neurons of the swim circuit (Fig. 1b). An early report (Getting, ...


... what it is that activates them, which could potentially be a complex chain of other neurons. As we have discussed, one popular view for real animals is that there are neurons in PFC which drive neurons that inhibit amygdala cells that would otherwise cause manifestations of fear. Of course even if e ...
NAlab13_LimbicSystem..
NAlab13_LimbicSystem..

... (2) crus, (3) body, and (4) column. Fibers ascend from the fimbria and curve rostrally to form the crus and body of the fornix, lying immediately ventral to the corpus callosum, and then descend toward the anterior commissure as the columns. As the columns of the fornix approach the anterior commis ...
Posterior cingulate cortex: adapting behavior to a
Posterior cingulate cortex: adapting behavior to a

... Recent studies have provided evidence that both humans and nonhuman animals often employ sophisticated, model-based assumptions when learning about their environments [7,11,15]. That is, agents first determine an appropriate set of constructs by which to model the world, and then update the paramete ...
Optical Illusion - CS 229: Machine Learning
Optical Illusion - CS 229: Machine Learning

... Two different experiments have been performed in this project. The first experiment tries to justify Zollner illusion and second experiment concentrates on brightness and watercolor illusion. ...
The limbic system-associated membrane protein
The limbic system-associated membrane protein

... substrate. In experiments using anti-LAMP to block the dotted LAMP substrate, additional binding sites on the nitrocellulose first were blocked by incubation for 30 minutes in DMEM/10% FCS. The plate was washed and the anti-LAMP (100 µg/ml) was dotted on the already adsorbed LAMP, allowed to bind fo ...
The cortical column: a structure without a function
The cortical column: a structure without a function

... This year, the field of neuroscience celebrates the 50th anniversary of Mountcastle’s discovery of the cortical column. In this review, we summarize half a century of research and come to the disappointing realization that the column may have no function. Originally, it was described as a discrete s ...
The Integrated Nature of Motor Cortical Function
The Integrated Nature of Motor Cortical Function

... (1999) further corroborate Jackson’s idea. Neural activity of motor cortex neurons was recorded during individuated finger movements made by monkeys; wrist muscle activity is inherent to this task. Most neurons were active during many or all of the movements performed. A cluster analysis of motor co ...
Cellular mechanisms underlying network synchrony in the medial
Cellular mechanisms underlying network synchrony in the medial

...  The interaction between a local network oscillator and the global theta activity offer the opportunity to control the local spike timing relative to that of the external afferents at the millisecond timescale.  The ...
Habit formation
Habit formation

... arises in medium spiny projection neurons as animals acquire the T-maze task is one in which the activity accentuates the boundaries of the maze runs. The majority of task-responsive neurons exhibit a burst of firing activity as the run is initiated, or as the run is completed, or both, resulting i ...
The Information Processing Mechanism of the Brain
The Information Processing Mechanism of the Brain

... in essence, the neural network is a unit that performs processing of activity patterns.) There is reason to recap the central properties of a neural network. A neural network can be modelled in a simple physical mechanism, which can be studied in computer simulations. This model captures the essenti ...
ORGANIZATION OF CORTICAL AFFERENTS TO THE FRONTAL
ORGANIZATION OF CORTICAL AFFERENTS TO THE FRONTAL

... Fig. 4B and ;C2-4). Thus, they occupied the upper parts of the cytoarchitectonic fields 5 and 7 of the parietal cortex (19, 24). On the lateral surface of the hemisphere, labeled cells were mainly aggregated in the anterior and medial parts of the ectosylvian sulcus, predominantly in its depth, but ...
ling411-13-FunctionalWebs - OWL-Space
ling411-13-FunctionalWebs - OWL-Space

...  The second of these points and probably also the first were already recognized by Wernicke ...
the clinical role of evoked potentials
the clinical role of evoked potentials

... In theory almost any sensory modality may be tested, although in routine clinical practice pattern reversal visual evoked potentials (VEPs), short latency somatosensory evoked potentials (SSEPs), and brainstem auditory evoked potentials (BSAEPs) are tested most frequently. Longer latency responses t ...
Choice Coding in Frontal Cortex during Stimulus
Choice Coding in Frontal Cortex during Stimulus

... Neurons are classified according to whether they showed a significant main effect (with no significant interactions) or a significant interaction. Neurons are further divided according to whether they showed the selectivity in only one given). We then advanced the window by 10 ms and analyzed the ne ...
Executive function
Executive function

... as dialling the number in reverse order (rearranging the digits that we have just been told). DLPFC has also been suggested to be involved in complex functions such as making plans for the future. A brain region with strong projections to and from the DLPFC is the anterior cingulate cortex (ACC), pa ...
Nervous Tissue Lab
Nervous Tissue Lab

... Divisions of Peripheral Nervous System Sensory Division • picks up sensory information and delivers it to the CNS ...
Nervous Tissue Lab
Nervous Tissue Lab

... Functions of Nervous System Sensory Function (PNS) • sensory receptors gather information (are stimulated) • information is carried as sensory Motor Function (PNS) • decisions are acted impulse on sensory neurons to the upon CNS • motor impulses are Integrative Function (CNS) carried on motor • sen ...
stretch reflexes
stretch reflexes

... in the absence of the cerebellum, a person ordinarily moves the hand or some other moving part of the body considerably beyond the point of intention. This results from the fact that normally the cerebellum initiates most of the motor signal that turns off a movement after it is begun if the cerebel ...
Brain days-Part V-Limbic
Brain days-Part V-Limbic

... It is possible that the altered emotional regulation or cognition found in all of these syndromes involves aberrant function of these circuits, but perhaps with different patterns on a molecular level. Phillips et al. 2003 ...
Optimal Sizes of Dendritic and Axonal Arbors
Optimal Sizes of Dendritic and Axonal Arbors

... Thus, the type I arrangement with wide dendritic arbors has shorter wire length. This conclusion holds for other convergence values much greater than one, provided D 1. However, there are other arrangements with non-zero axonal arbors that give the same wire length. One of them is shown in Figure 3d ...
Chapter Two - McGraw Hill Higher Education
Chapter Two - McGraw Hill Higher Education

... crawl under a fence. Another woman recalled a melody each time a certain point on the cortex was stimulated. The lesson of Penfield’s experiments is clear—the brain and our psychological lives are intimately connected. This chapter is about topics that you would expect to find in a biology course, b ...
Decision Making in Recurrent Neuronal Circuits
Decision Making in Recurrent Neuronal Circuits

... Review have been developed and applied to various experimental paradigms, including perceptual tasks that involve both decision making and working memory, action selection and preparation, learning flexible sensorimotor associations, and reward-based economic choice behaviors such as foraging or int ...
Neurofilament and Calcium-Binding Proteins in the
Neurofilament and Calcium-Binding Proteins in the

... association areas located in the parietal and temporal cortex (Kondo et al., 1994). Previous analyses of the distribution of calcium-binding proteins in the macaque monkey cingulate cortex have shown that parvalbuminimmunoreactive interneurons are codistributed with neurofilament protein-immunoreact ...
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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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