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Nervous System - Anderson School District One
Nervous System - Anderson School District One

... functions. brain at about the These same the two nervous time. divisions, Some system. nerves along with Make contain the central a brochure only nervous outlining sensory system, recentup neurons, make medical and your some advances. contain body's only motor nervous neurons, system. but most nerve ...
For Motor Outputs, as for Sensory Inputs, Spike Timing Carries More
For Motor Outputs, as for Sensory Inputs, Spike Timing Carries More

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Introduction to Neurotransmitters

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learning objectives chapter 2
learning objectives chapter 2

... 20. Explain the roles of Broca’s area and Wernicke’s area in language production and comprehension. (see “Association Cortex”) 21. Explain how split-brain studies provide insight into the specialized functions of the brain’s two hemispheres. (see “The Divided Brain: Lateralization”) ...
The Nervous System
The Nervous System

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Chapters 13, and 14
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... The action potential occurs in each successive portion of an axon. A refractory period ensures that the action potential will not move backwards. In myelinated fibers the action potential only occurs at the nodes of Ranvier. This is called saltatory conduction. The Synapse Transmission of the nerve ...
Connexionism and Computationalism
Connexionism and Computationalism

... found to comprise a network of neurons. Each neuron has a clear structure with input “dendrites”, a processing “soma” and an output “axon”. Each neuron is connected on average to around 1000 other neurons through “synapses” which are connections whose strength may change as the brain is exposed to s ...
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Semantics and Categories

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synaptic transmission worksheet

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Basic Organization of the Nervous system

... Neural tissue of the CNS and PNS contains two general categories of cells: neurons and supportive cells. The central nervous system (CNS) consists of about 10% neurons and 90% neuroglia (supportive cells). The CNS contains approximately 10 billion neurons. While the PNS contains all three morpholog ...
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True or False Questions - Sinoe Medical Association

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The Brain - Miami Arts Charter School
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... synapse. The neurotransmitters fit into receptor sites on the dendrites of neuron B. If enough neurotransmitters are received (threshold is achieved), positive ions rush through the now permeable cell membrane of neuron B. This rapid electric message firing is called an action potential. When the ch ...
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Structure of the Nervous System Functional Classes of Neurons

... the muscles of the neck. Each trunk  then splits in two, to form six  divisions. These six divisions will  regroup to become the three cords.  The cords are named by their  position with respect to the axillary artery. These cords branch the  branch to travel to specific muscles.  Each branch is a n ...
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U3 Neurobiology Summary

... Myelination is the development of myelin round axon fibres of individual neurons. Myelination is not complete at birth and so nervous control increases over the first two years as many more neurons are myelinated. Myelination continues from birth to adolescence. As a result responses to stimuli in t ...
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ELECTRIC CURRENTS

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3A & 3B PowerPoint
3A & 3B PowerPoint

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Nervous System - Thephysicsteacher
Nervous System - Thephysicsteacher

...  Cannabis. Marijuana – a hallucinogen – (from the dried leaves) and hashish (resin from the flowers). In low doses it is a depressant – impairs co-ordination, perception, timing and short-term memory. It slows down motor activity and causes mild euphoria. It also causes disorientation, increased an ...
Academic Half-Day Neurophysiology 101
Academic Half-Day Neurophysiology 101

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Lesson 33 - UBC Zoology
Lesson 33 - UBC Zoology

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Turning neurons into a nervous system
Turning neurons into a nervous system

... a single wild-type RGC. Regardless of the position of the RGC in the retina, it projected to the correct target position in the tectum. In particular, axons from nasal RGCs grew straight to the posterior tectum (Fig. 2B). These findings indicate that axon-axon competition is not required for retinot ...
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Single-unit recording

In neuroscience, single-unit recordings provide a method of measuring the electro-physiological responses of single neurons using a microelectrode system. When a neuron generates an action potential, the signal propagates down the neuron as a current which flows in and out of the cell through excitable membrane regions in the soma and axon. A microelectrode is inserted into the brain, where it can record the rate of change in voltage with respect to time. These microelectrodes must be fine-tipped, high-impedance conductors; they are primarily glass micro-pipettes or metal microelectrodes made of platinum or tungsten. Microelectrodes can be carefully placed within (or close to) the cell membrane, allowing the ability to record intracellularly or extracellularly.Single-unit recordings are widely used in cognitive science, where it permits the analysis of human cognition and cortical mapping. This information can then be applied to brain machine interface (BMI) technologies for brain control of external devices.
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