Most reflex responses decrease {habituation}| if non-threatening stimulus repeats without reinforcement. Receiving same stimulus repeatedly or continuously decreases sensation.
purpose
Habituation allows animal to ignore persisting situation or disregard irrelevant stimuli.
specific
Habituation is only to specific stimulus. Habituation ends immediately when stimulus pattern changes. Therefore, dishabituation can detect if animal perceives anything new.
behavior
Sexual behavior can have habituation.
timing
Habituation happens sooner the second time. Habituation happens sooner to weak stimuli.
time
In mammals, habituation decreases receiving-neuron post-synaptic potential for up to one hour. Because back-projection signals decrease, calcium influx is lower, sending neuron releases less transmitter, and receptor alters.
In marine snails, decreased vesicle release, from sense to motor neurons, causes habituation that persists for minutes. Repeated habituation decreases presynaptic-terminal number.
comparison
Tiredness does not cause habituation. Habituation cannot be for associative learning.
Biological Sciences>Zoology>Organ>Nerve>Neuron>Physiology
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Date Modified: 2022.0224