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Title: Structural Classification and Action Potential
Description: Psychology behind Action Potentials, thresholds, and stimulus'. Also expands on different nerves in the body. Psychology 101
Description: Psychology behind Action Potentials, thresholds, and stimulus'. Also expands on different nerves in the body. Psychology 101
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Structural Classification
Based on the number of processes that extend from the cell body
Bipolar Neuron
Multipolar
Unipolar
Action Potential
Makes up the neural impulse
Electrical Message
Due to an external stimulus (usually at dendrites)
2 Types of stimuli
Excitatory- causes a local depolarization
Opens Na+ channels near the receptors site
Na+ floods in
Causes the neuron to become more positive
Inhibitory- causes a local hyper polarization
Opens K+ channels near the receptors site
K+ moves out
Makes neuron more negative
For a stimulus to cause an action potential, the membrane must be depolarized to -50 millivolts(mv);
threshold
If a stimuli does not cause a depolarization to threshold there is no action potential, this is the ALL OR
NONE LAW
Title: Structural Classification and Action Potential
Description: Psychology behind Action Potentials, thresholds, and stimulus'. Also expands on different nerves in the body. Psychology 101
Description: Psychology behind Action Potentials, thresholds, and stimulus'. Also expands on different nerves in the body. Psychology 101