What kind of brain alteration will cause the fear response of freezing to discontinue in rats?
A) Using a split-brain operation to cut the corpus callosum.
B) Lesioning the anterior and posterior hippocampal body.
C) Ablating the medulla oblongata.
D) Severing the connections from the amygdala to the mid-brain.

Question

Quizplus · Accepted Answer

Severing the connections from the amygdala to the mid-brain would disrupt the fear circuitry and subsequently interrupt the freezing response. The amygdala plays a critical role in detecting and responding to fear-inducing stimuli, and its connections to the mid-brain are involved in initiating the freezing response. By severing these connections, the fear response would be disrupted, resulting in a lack of freezing behavior.

What Kind of Brain Alteration Will Cause the Fear Response