Nerve impulse are transmitted across a synapse from the Acell body of one neuron to the axon terminal of another Bdendrites of one neuron to the axon terminal of another Caxon terminal of one neuron to the dendrites of another Ddendrites of one to cell body of anther ...
The brain is the center of the nervous system, like the microprocessor in a computer. The spinal cord and nerves are the connections, like the gates and wires in the computer. Nerves carry electrochemical signals to and from different areas of the nervous system as well as between the nervous...
The synapse or “gap” is the place where information is transmitted from one neuron to another. Synapses usually form between axon terminals and dendritic spines, but this is not universally true. There are also axon-to-axon, dendrite-to-dendrite, and axon-to-cell body synapses. The neuron ...
Briefly explain what depolarization is. Explain how an electrical impulse is propagated along a neuron. How does an EMG signal show the intensity of muscle activation? Why does this happen? Explain how the sympathetic and parasympathetic nervous systems alter the rate of the SA ...
What type of cell is myelin? Myelin is made by two different types ofsupport cells. In the central nervous system (CNS) — the brain and spinal cord — cells called oligodendrocytes wrap their branch-like extensions around axons to create a myelin sheath. In the nerves outside of the spina...
They may be reencoded as spike trains or cause transmitted influence upon the next neurons without spikes (Chapter 3). I like to recognize impulse trains in single neurons as providing a whole class of candidate codes, for many of which there is now some evidence. These are single channel ...
Oligodendrocytes are glial cells that myelinate axons in the central nervous system (brain and spinal cord). An oligodendrocyte is a cell with many projections off of the cell body; each one of these wraps around a segment of an axon to myelinate it. This way, one oligodendrocyte is ...
Thus, the action potential (nerve impulse or nerve signal) gets transmitted (propagated) down the nerve cell. There are a few things to note about the propagation of the action potential. When an area has been depolarized and repolarized and the action potential has moved on to the ...
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Here is a more detailed rendering of ARAS Faced with the bewildering powers of the brain—e.g., to recognize a personal insult or compliment and spontaneously generate feelings of resentment or pleasure—psychologists apparently, as Alan Bloom observed in The Closing of the American Mind, began ...