Neural Oscillation - Activity Patterns

Activity Patterns

Both single and groups of neurons can generate oscillatory activity spontaneously. In addition, they may show oscillatory responses to perceptual input or motor output. Some types of neurons will fire rhythmically in the absence of any synaptic input. Likewise, brain wide activity reveals oscillatory activity while subjects do not engage in any activity, so-called resting-state activity. These ongoing rhythms can change in different ways in response to perceptual input or motor output. Oscillatory activity may respond by increases or decreases in frequency and amplitude or show a temporary interruption, which is referred to as phase resetting. In addition, external activity may not interact with ongoing activity at all, resulting in an additive response.

Oscillatory responses
The frequency of ongoing oscillatory activity is increased between t1 and t2.
The amplitude of ongoing oscillatory activity is increased between t1 and t2.
The phase of ongoing oscillatory activity is reset at t1.
Activity is linearly added to ongoing oscillatory activity between t1 and t2.

Read more about this topic:  Neural Oscillation

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