Neural Substrate for Perception of Fearful Expression

摘要

Because of unilateral AMG damage is insufficient to cause this impairment (Adolphs et al., 1995), the performance of LJM support that bilateral cingulate gyrus is involved in fear processing. Bilateral hippocampus is not responsible for fear perception and right tempo-parietal lobe involved in all emotion perception. There could be two possibilities for the involvement of bilateral cigulate gyrus and amygdala involved in the perception of fear. One is that bilateral anterior cingulate gyrus participate in the network as the higher processing unit after bilateral amygdala. Bilateral amygdala process the incoming information as primary fear stimuli and then convey the information to bilateral anterior cingulate gyrus which interpret this information, together with primary sensory information and related rapid automatic responses which could have been part of the fleeing response to danger. The second possibility is that there are other units in the association cortex, such as orbitofrontal, right parietal and temporal cortices which are non-selectively involved in all emotion processing, while the amygdala and anterior cingulate gyrus are selectively involved in just fear emotion processing at a lower level and in parallel.