Habituation to stimulus can stop {dishabituation}| suddenly or gradually. Habituation to stimulus immediately ends if another stimulus begins. Sensitization affects same synapses affected by habituation.
Animal behavior has unchanging action programs {fixed sequence}|, which can combine.
Exposure to stimulus {mere exposure} makes people favor stimulus.
Stereotyped behavior distributes spatiotemporal signals to target neurons {motor routine}| in response to stimulus or brain signal. The same motor routine can distribute signals to different locations and at different spatial scales.
Receptor stimulation can send signal to spinal cord and then to muscle or gland, resulting in involuntary action {reflex, behavior}.
If dangerous or important stimuli happen, escape or fighting reflexes can heighten for several minutes {sensitization, behavior}. Repeated dangerous stimuli make sensitization last days or weeks. Response to other stimuli also increases. Sensitization affects same synapses affected by habituation. Sensitization releases more vesicles by increasing interneuron activity on habituated-reflex sense and motor neurons. Sensitization is not associative.
Fear increases response to startling {startle response, fear}.
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Date Modified: 2022.0225