Which statement best describes the basis of sensory adaptation?
A) A continuously stimulated sensory receptor triggers fewer action potentials, so stimuli sent to the brain decrease and awareness of the stimuli is diminished.
B) The nerve fiber synapsed with a sensory receptor gradually returns to its baseline level of firing despite continued neurotransmitter stimulation.
C) The spinal cord interneurons that receive a prolonged stimulus gradually come to ignore it.
D) The thalamic centers that receive a prolonged stimulus gradually come to ignore it.
Answer: A
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