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2_Neuro-Bio_Review
2_Neuro-Bio_Review

... 1. Neurons have specialized projections called dendrites and axons. Dendrites bring information to the cell body and axons take information away from the cell body. 2. Neurons communicate with each other through an electrochemical process. 3. Neurons form specialized connections called "synapses" an ...
Cholinergic induction of network oscillations at 40 Hz in the
Cholinergic induction of network oscillations at 40 Hz in the

... Acetylcholine is vital for cognitive functions of the brain. Although its actions in the individual cell are known in some detail1, its effects at the network level are poorly understood2. The hippocampus, which receives a major cholinergic input from the medial septum/diagonal band3, is important i ...
Parkinson`s Disease Glossary A guide to the scientific language of
Parkinson`s Disease Glossary A guide to the scientific language of

... becomes manifest when two copies of a mutated gene (two alleles) are present. In order for a particular trait to be expressed, both parents must have the particular mutated allele or gene, and both must pass it to the offspring who then manifests the genetic disease. Some genetic forms of PD are aut ...
The Cerebellum, Basal Ganglia and Overall Motor
The Cerebellum, Basal Ganglia and Overall Motor

... contraction, muscle tension and limb position and forces acting on the body surface  ventral spinocerebellar tract - signals from anterior horn, and interneurons (efference copy) the integrated signal from the final common pathway before it goes to the muscle. It is bilateral tract  transmits info ...
The visual-oculomotor striatum of the cat: functional relationship to
The visual-oculomotor striatum of the cat: functional relationship to

... a first series of experiments, the former was injected with a retrograde tracer in several cats. Thalamostriate cells were found in extensive regions, including the intralaminar nuclei, certain motor-related nuclei, and, most notably, across much of the extrageniculate visual thalamus. In another se ...
Sensory Systems - Zanichelli online per la scuola
Sensory Systems - Zanichelli online per la scuola

... of tympanic membrane to the oval window. The ossicles translate vibration of tympanic membrane to smaller movement but greater force at the smaller oval window. Movement of oval window is translated into pressure changes in the fluid-filled inner ear. ...
Presentation Slides
Presentation Slides

... of open areas vs. desire to explore novel environments ...
Microstructure of the neocortex: Comparative aspects
Microstructure of the neocortex: Comparative aspects

... the evolution of the vertebrate brain. One of the fundamental questions in neuroscience is what is special about the neocortex of humans and how does it differ from that of other species? It is clear that distinct cortical areas show important differences within both the same and different species, ...
The Nervous System - Livonia Public Schools
The Nervous System - Livonia Public Schools

... impulses that control voluntary actions that involve thought • extrapyramidal pathways carry impulses that control automatic movements, such as walking ...
Theme 4: Rhythmical movements (6 p)
Theme 4: Rhythmical movements (6 p)

... retinal bipolar cells, retinal ganglion cells, neurons of the lateral geniculate nucleus (LGN), neurons of the primary visual cortex, neurons of the extrastriate areas). (2p) ...
Jukic et al. SUPPLEMANTARY SUPLEMENTARY METHODS En1+/
Jukic et al. SUPPLEMANTARY SUPLEMENTARY METHODS En1+/

... monoaminergic neurons rather than in their migration or projection (Brodski, et al 2003), only studies that report this aspect of development were taken into consideration. Based on these publications a gene list was compiled for DA as well as for 5-HT neurons. ...
November 2000 Volume 3 Number Supp pp 1184
November 2000 Volume 3 Number Supp pp 1184

... associations seem to evoke less activity in the PFC than relatively novel stimuli10, indicating that other mechanisms or brain regions might get involved after extensive training. Low spontaneous and selective high-activity states In contrast to the model in Fig. 2, PFC neurons in vivo are never si ...
The rhinal cortices: a wall of inhibition between the
The rhinal cortices: a wall of inhibition between the

... Results obtained in the isolated brain preparation with simultaneous current-source density analysis and intracellular recordings confirm and extend these observations (Biella et al., 2001). Stimulation of both the temporal neocortex and the PRC at the same rostrocaudal level as the intracellularly ...
Multisensory Integration of Dynamic Faces and Voices
Multisensory Integration of Dynamic Faces and Voices

... natural video by overlaying the two frames using Adobe Premiere 6.0 software (Adobe Systems, San Jose, CA). The position and size of the disk were then adjusted until it approximated the diameter of the mouth in the corresponding frame of the natural video. This procedure was repeated frame by frame ...
Natwest Bank - Brain Mind Forum
Natwest Bank - Brain Mind Forum

... but gaps or clefts. None of the signals carried along the axons and dendrites can pass across these gaps. The electrochemical signals travelling along an axon or dendrite stimulate neurotransmitter molecules which swim across the synaptic gap and stimulate an electrochemical signal in the target axo ...
Mechanisms of Visual Attention in the Human Cortex
Mechanisms of Visual Attention in the Human Cortex

... firing rate and a single poor stimulus elicited a low firing rate, the response to the paired stimuli was reduced compared with that elicited by the single good stimulus. This result indicates that two stimuli present at the same time within a neuron’s RF are not processed independently, but rather ...
Nervous System PPT notes
Nervous System PPT notes

... REVIEW: Functional Classification • Neurons are grouped according to the direction in which the nerve impulse travels relative to the CNS • Based on this, there are sensory, motor & association ...
Alterations to multisensory and unisensory integration by stimulus
Alterations to multisensory and unisensory integration by stimulus

... orient toward biologically relevant events. The superior colliculus (SC) plays a key role in this task by translating sensory signals into the motor commands required for orienting the eyes, ears, and head toward salient visual, auditory, and tactile stimuli as well as to their various cross-modal c ...
Attention as a decision in information space
Attention as a decision in information space

... of behavioral tasks suitable for use in experimental animals. In these tasks animals are trained to make simple decisions based on sensory evidence or rewards and express these decisions through specific actions [1,2]. This strategy has been particularly fruitful in the oculomotor system, where monk ...
1 - Test Bank wizard
1 - Test Bank wizard

... coma and could not be awakened. If we know that the area of damage is somewhere in the brain stem, which structure is most likely damaged? a. medulla b. pons c. reticular formation d. cerebellum ANS: c LO=2.7 ...
Voluntary Movement
Voluntary Movement

... • Controls fine motor movements • Destruction: loss of muscle strength, reduced dexterity of hands and fingers • No effect of corticospinal lesions on posture or use of limbs for reaching • Uses different brain structures (BG, Cerebellum) ...
Ionic Mechanism of the Slow Afterdepolarization Induced by
Ionic Mechanism of the Slow Afterdepolarization Induced by

... Haj-Dahmane, Samir and Rodrigo Andrade. Ionic mechanism of the slow afterdepolarization induced by muscarinic receptor activation in rat prefrontal cortex. J. Neurophysiol. 80: 1197–1210, 1998. The mammalian prefrontal cortex receives a dense cholinergic innervation from subcortical regions. We prev ...
Time cited
Time cited

... spinal cord, using confocal microscopy. We demonstrate that GDNF is well associated with nonpeptidergic pain pathway and that GDNF could possibly be anterogradely transported from DRG neurons to superficial spinal cord dorsal horn. We also studied the dynamic changes of GDNF expression in rats durin ...
The Newborn`s Reflexes
The Newborn`s Reflexes

... – How do reflexes help newborns interact with the world? – How do we determine whether a baby is healthy and adjusting to life outside the uterus? – What behavioral states are common among newborns? – What are the different features of temperament? Do they change as children grow? ...
The Evolution of Neuron Types and Cortical
The Evolution of Neuron Types and Cortical

... computerized image analysis, and immunohistochemical and histochemical staining to identify subpopulations of cortical cells. These new approaches are especially appealing for investigations of phylogenetic variation in cortical histology in species that are not common to the laboratory because seve ...
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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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