Longer-term habituation in Aplysia,lasting up to three weeks,most likely results from
A)the temporary depletion of available neurotransmitter in the motor neuron serving the gill muscle.
B)the temporary depletion of available neurotransmitter in the presynaptic sensory neuron.
C)fatigue in the muscles serving the gill.
D)changes in NMDA glutamate receptors

Question

Longer-term habituation in Aplysia,lasting up to three weeks,most likely results from​ 
A)the temporary depletion of available neurotransmitter in the motor neuron serving the gill muscle. 
B)the temporary depletion of available neurotransmitter in the presynaptic sensory neuron. 
C)fatigue in the muscles serving the gill. 
D)changes in NMDA glutamate receptors

Quizplus · Accepted Answer

Longer-term habituation in Aplysia is likely due to changes in NMDA glutamate receptors. This type of habituation requires gene expression and protein synthesis, which suggests that it involves changes in the strength or number of synapses between the sensory and motor neurons. NMDA receptors are important for synaptic plasticity and are thought to play a role in long-term memory formation in many organisms, including Aplysia.

Longer-Term Habituation in Aplysia,lasting Up to Three Weeks,most Likely Results