If a brain area loses a set of incoming axons, we can expect some combination of ____ by the remaining axons and collateral sprouting by other axons that ordinarily attach to some other target.
A) disuse supersensitivity
B) decreased response
C) denervation supersensitivity
D) response supersensitivity

Question

Quizplus · Accepted Answer

When a brain area loses a set of incoming axons, denervation supersensitivity occurs. This means that the remaining axons that attach to the target become more sensitive to the neurotransmitters or signaling molecules they receive. Additionally, collateral sprouting by other axons that ordinarily attach to some other target may occur, allowing them to make new connections with the target area. These changes can compensate for the loss of the original set of axons, but can also lead to maladaptive changes and pathological conditions in some cases.

If a Brain Area Loses a Set of Incoming Axons