'Inhibitory' diaporamas de présentation

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The perils of bidirection al excitation..

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Neural Networks for Optimization

Neural Networks for Optimization. Bill Wolfe California State University Channel Islands. Neural Models. Simple processing units Lots of them Highly interconnected Exchange excitatory and inhibitory signals Variety of connection architectures/strengths

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Muscle and nerve physiology

Muscle and nerve physiology. Introduction . Muscle & nerve are called excitable tissues because they respond to chemical, mechanical, or electrical stimuli

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Neural Networks for Optimization

Neural Networks for Optimization. Bill Wolfe California State University Channel Islands. Neural Models. Simple processing units Lots of them Highly interconnected Exchange excitatory and inhibitory signals Variety of connection architectures/strengths

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BASAL GANGLIA

BASAL GANGLIA. Prof. Ashraf Husain. BASAL GANGLIA. Basal ganglia are subcorticle nuclei of grey matter located in the interior part of cerebrum near about base. Basal Ganglia. Structure. Functions. Metabolic features. Connections. Disorders. STRUCTURE. Five nuclei :

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PHYSIOLOGY OF BASAL GANGLIA

PHYSIOLOGY OF BASAL GANGLIA. Prof. Sultan Ayoub Meo MBBS, M.Phil, Ph.D (Pak), Med Ed, Med Ed, (Dundee), FRCP (London), FRCP (Dublin), FRCP (Glasgow), FRCP (Edinburgh) Prof. Department of Physiology College of Medicine, King Saud University. Lecture Objectives.

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Freud was right: Inhibitory processes in memory

Freud was right: Inhibitory processes in memory. Chris Moulin c.j.a.moulin@leeds.ac.uk. Aims & Objectives. Aim: to describe current studies in inhibition By the end of this lecture and associated reading you should be able to: Define what inhibition is

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Local Stability Analysis

Local Stability Analysis. Step One: find stationary point(s) Step Two: linearize around all stationary points (using Taylor expansion), the Eigenvalues of the linearized problem determine nature of stationary point: Real parts: positive: growth of fluctuations, instability

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Fiber Types

Fiber Types. Three fiber typing schemes Metabolic/biochemical activity of fiber Protein/gene expression of fiber Functional performance of motor unit Explain the relationship between motor unit types and muscle fiber types Burke &al 1973 Schiaffino & Bottinelli, 2011.

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Biology 211 Anatomy & Physiology I

Biology 211 Anatomy & Physiology I. Electrophysiology. Recall: A neuron carries an electrical signal produced by the movement of ions across its plasma membrane. Any atom or molecule carrying an electrical charge (+ or -) .

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NK cells are part of the innate immune response

NK cells are part of the innate immune response. Early response to injury and infection. Natural Killer (NK) Cells. Functions:. Cytolysis: killing infected or damaged cells Cytokine production: IFN ?, GM-CSF, TNF?. Control of the switch from innate to adaptive immunity

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Aim: Nerve Control

Aim: Nerve Control. Nervous Coordination. Types of neurons. Sensory neurons (afferent) receive initial stimuli. Interneurons (associative) are located in the brain or spinal cord. Motor neurons (efferent) stimulate effectors (muscles/glands that perform a response.). Neuron Structure.

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Biology Journal 3/11/2014

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Cerebellum

Cerebellum. Dr. Safaa. Objectives Identify the major lobes and regions of cerebellum. Summarize the structure of the cerebellar cortex Identify the deep cerebellar nuclei and their connections.

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Ventral Medial Prefrontal Cortex and Emotional Perseveration: The Memory for Prior Extinction Training

Ventral Medial Prefrontal Cortex and Emotional Perseveration: The Memory for Prior Extinction Training . Maria A. Morgan, Jay Schulkin, Joseph E. LeDoux DepartmentofPsychology,NewYorkUniversity,NewYork,NY,USA CenterforNeuralScience,NewYorkUniversity,4WashingtonPI,Room809,NewYork,NY1003,USA

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Synaptic Plasticity III

Synaptic Plasticity III. 4 April 2012. Housekeeping. NO LABS THIS WEEK! No lab 8 assignment due No class until next Wednesday Have a happy Easter! But a sad Good Friday! Problem Set 3 and Article Set 3 are available Problem Set 3 consists of questions about Article Set 3. Dendrites.

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Inhibitory and Excitatory Signals

Inhibitory and Excitatory Signals. Excitatory Potentials. Excitatory postsynaptic potential (EPSP) occurs when membrane potential goes toward threshold (becomes more depolarized). ACh and Glutamate gated ion channels are excitatory.

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September 15 (A-Day) & 16 (B-Day)

September 15 (A-Day) & 16 (B-Day). Objective: Explain how the brain and nervous system communicates specifically addressing neurons, neurotransmitters, and synapses. CBM Neuron construction Parts/Types of Neurons Synapse Neurotransmitters

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Two parallel mechanisms in the basal ganglia. In parallel

+. +. Two parallel mechanisms in the basal ganglia. In parallel with the CD- SNr -SC serial inhibitions are present pathways mediated by the GPe and/or STN. Inhibitory and excitatory neurons are indicated by solid and open circles, respectively .

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