PSY100H1 Chapter Notes - Chapter 3: Multiple Sclerosis, Resting Potential, Myelin
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PSY100H1 Full Course Notes
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Document Summary
A communication network comprised of billions of specialized cells, evaluates info from the external world then produces behaviours or makes bodily adjustments to adapt to the environment. Operate through electrical impulses and communicate with other neurons through chemical signals. They differ from most other cells because they are excitable: reception: take in info from neighboring neurons, conduction: integrate those signals, transmission: pass signals to other neurons. A neuron: messages are received by the dendrites, processed in the cell body, transmitted along the axon, and sent to other neurons via chemical substances released from the terminal buttons. The nerves that provide info from muscles are referred to as somatosensory, which is the general term for sensations experienced from within the body. Neurons don"t communicate randomly or arbitrarily, they selectively communicate with other neurons to form circuits or neural networks. These networks develop through maturation and experience, forming permanent alliances among groups of neurons.
