Evidence from the effects of amygdalar lesions on conditioned fear suggests that
A) no learning can take place without a functioning amygdala.
B) conditioned fear cannot be learned without a functioning, but conditioned salivation still proceeds normally.
C) the circuit connecting the amygdala and thalamus is capable of identifying fear stimuli without much cortical input.
D) the circuit connecting the amygdala and thalamus is incapable of identifying fear stimuli in the absence of cortical input.

Question

Quizplus · Accepted Answer

The effects of amygdalar lesions on conditioned fear suggest that the circuit connecting the amygdala and thalamus is capable of identifying fear stimuli without much cortical input, indicating a primary role of the amygdala in processing emotional information. While the amygdala is important for the learning and expression of conditioned fear, it is not necessary for all forms of learning or memory. Additionally, conditioned salivation could still proceed normally without the amygdala's input. Therefore, option A and B are incorrect. Option D is also incorrect as the amygdala-thalamus circuit can identify fear stimuli without much cortical input.

Evidence from the Effects of Amygdalar Lesions on Conditioned Fear