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pdf file  - Center for Theoretical Neuroscience
pdf file - Center for Theoretical Neuroscience

... relay cell axons terminating within the corresponding region of layer 4. Surprisingly, the receptive fields of LGN axons recorded within a given vertical penetration formed a region in visual space that was elongated parallel to the preferred orientation of cortical cells recorded in the same column ...
Special Senses
Special Senses

... b) tympanic cavity -cavity where ossicles are found -Eustachian tube = pressure release,“pop” b/c tympanic membrane moves -bacteria & viruses move up tube to infect middle ear (Otitis media) ...
Ch - Humble ISD
Ch - Humble ISD

... L - language; dominate the control of hand movements like _________; & logic (math) ...
Gain-of-function mutation in Nav 1.7 in familial
Gain-of-function mutation in Nav 1.7 in familial

... et al., 1995). Proband and control templates produced similar amplicons which were purified and sequenced. Sequence analysis identified a T-to-G transversion in exon 23 (E23), corresponding to position 4393 of the reference sequence (see Supplementary material). This mutation substitutes phenylalani ...
Brain Development Infancy and Early Childhood Phyllis L
Brain Development Infancy and Early Childhood Phyllis L

... Synaptogenisis Dendrites As dendrite branches multiply, they provide an increasing surface area for (synaptic terminals) from other neurons. The larger the number of neuronal connections, the higher the possibilities for neural, and therefore, cognitive activity Axons Variety of lengths, depending ...
Visual Processing in the Primate Brain
Visual Processing in the Primate Brain

... extract different types of commonly used visual information efficiently. In the primate visual system (Nassi & Callaway, 2009), and indeed many other sensory processing systems (K. O. Johnson & Hsiao, 1992; Kaas & Hackett, 2000), this leads to parallel processing in which independent, specialized ce ...
Lecture 6 Locomotion • Early 20th century experiments showed that
Lecture 6 Locomotion • Early 20th century experiments showed that

... • Reciprocal  innervation  of  antagonists  muscles  can  facilitate  reflex  responses  but  cannot  explains  prolonged  bursts   of  flexor  and  extensor  activity     • In  spinal  cats  treated  with  L-­‐DOPA,  brief  stimulation  of   ...
text of chapter 2
text of chapter 2

... When artists and academic psychologists look at René Magritte's The Lovers, they probably notice different aspects of the canvas (Figure 2.1). Artists may observe the overall composition with its intersecting diagonals, and the skillful shading that helps give perspective to the shrouded figures. Pe ...
Neurologic System
Neurologic System

... posture….Operates on subconsious level ...
Chapter 15 - Nervous System Brain & Cranial Nerves
Chapter 15 - Nervous System Brain & Cranial Nerves

... processes called tracts. There are three major types of tracts in the cerebral cortex: Commissural fibers – connect the gray matter between the two hemispheres. e.g. corpus callosum Association fibers – connect adjacent gyri in same hemisphere. e.g. visual and auditory association ...
Unit 1 – Nervous and Endocrine System
Unit 1 – Nervous and Endocrine System

...  Reflexes are fast b/c the brain does not have to process incoming info before reacting  A reflex arc is the neural pathway that mediates a reflex action  A reflex arc uses very few neurons to transmit messages  Steps in a reflex arc: 1. Receptors (heat, pain, cold) initiate an impulse in a sens ...
INTERNEURONS OF THE NEOCORTICAL INHIBITORY SYSTEM
INTERNEURONS OF THE NEOCORTICAL INHIBITORY SYSTEM

... NATURE REVIEWS | NEUROSCIENCE ...
Nervous System
Nervous System

... the recording electrode. Membrane at the recording electrode is still hyperpolarized. ...
L16-Pathways of Proprioception2014-08-23 10
L16-Pathways of Proprioception2014-08-23 10

... columns pass uninterrupted up to the dorsal medulla, where they synapse in the dorsal column nuclei then cross to the opposite side of the brain stem and continue upward through the medial lemnisci to the thalamus. each medial lemniscus is joined by additional fibers from the sensory nuclei ...
Japan-Canada Joint Health Research Program – U
Japan-Canada Joint Health Research Program – U

... It is becoming increasingly apparent that the primary motor cortex (MI) is important not only in the initiation and regulation of motor function but also in the learning and adaptation of motor behaviours to an altered peripheral state. To examine the possible role that the face MI may play in train ...
The Central Nervous System
The Central Nervous System

... Now, let us move on to the neuron. As will be the general pattern of behavior for SPPA 205, we will begin discussion of the neuron with its basic structure, followed by its function. Although there is a great deal of diversity in the look of neurons, the vast majority of neurons have four structural ...
Toward a Unified Theory of Visual Area V4
Toward a Unified Theory of Visual Area V4

... Beyond retinotopy, many fMRI studies of V4 are broadly consistent with what would be expected based on neurophysiological studies in monkey V4. However, this comparison is difficult to make because interpretation of fMRI results in terms of the underlying neural mechanisms is problematic (Buxton et a ...
Repair and regeneration of tissues using stem cells
Repair and regeneration of tissues using stem cells

... 16. • Stem cell therapy, also known as regenerative medicine, is the replacement of diseased, dysfunctional or injured cells with stem cells or their derivatives. Its somewhat similar to the organ transplant process but uses cells instead of organs.• Researchers grow stem cells in the lab. These ste ...
The Cl Area of the Brainstem in Tonic and Reflex
The Cl Area of the Brainstem in Tonic and Reflex

... Cl area are local neurons, some of which can be characterized immunocytochemically as containing yaminobutyric acid (GABA),16 or being cholinergic17 or enkephalinergic.18 Neuropepu'de Y is colocalized with PNMT in some Cl neurons," while substance P, also found in the region, is only colocalized wit ...
Olfactory tubercle neurons exhibit slowphasic firing patterns during
Olfactory tubercle neurons exhibit slowphasic firing patterns during

... A large body of electrophysiological research has focused on the role of the NAcc in reward processing. These studies have demonstrated that neurons show slow-phasic changes in firing rate for minutes surrounding an infusion. The “progressive-reversal” slow phasic pattern is characterized by a posti ...
Neural Anatomy and Function
Neural Anatomy and Function

... • Dendrite • Cell Body • Axon ...
Luczak, 2015 - University of Lethbridge
Luczak, 2015 - University of Lethbridge

... 90 neurons, recorded simultaneously, in response to auditory tones is shown (the data are derived from a different study than that shown in part a). Grey horizontal lines are pseudocolour representations of each neuron’s peristimulus time histogram (PSTH), and the red dots denote each neuron’s mean ...
Honors Thesis
Honors Thesis

... There are treatments to Parkinson’s that are effective in varying degrees. The “most common” one is medication that addresses “the shortage of the brain chemical (neurotransmitter) dopamine” which is said to cause the symptoms of Parkinson’s." When medication does not work, brain surgery is an optio ...
Chapter 16 Sense Organs
Chapter 16 Sense Organs

... – auditory canal – passage leading through the temporal bone to the tympanic membrane – external acoustic meatus – slightly s-shaped tube that begins at the external opening and courses for about 3 cm • guard hairs protect outer end of canal • cerumen (earwax) – mixture of secretions of ceruminous a ...
Ganglioglioma of the Neurohypophysis
Ganglioglioma of the Neurohypophysis

... 18], have invited two very different pathophysiologic explanations. One mechanism, the earliest proposed, suggested that the neuronal lesions, by producing hypothalamic releasing hormones, result in pituitary hyperplasia and promote adenomagenesis [12]. Multiple reports invoked this explanation [11, ...
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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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