The part of the brain that seems to influence emotions such as fear and pleasure is the Amygdala.
What is the role of the Amygdala?
The amygdala plays a major role in processing memories and emotions related to fear. The limbic system of the brain, which includes the amygdala, is thought to be important for processing powerful emotions like fear and pleasure.
The amygdala is connected to numerous other brain regions, which enables it to communicate with regions that process "higher" cognitive information and systems that regulate "lower" processes (such as autonomic responses like breathing, touch, and sensitivity)
Each hemisphere of the brain has two amygdalae, and there are three recognized functionally separate parts:
The olfactory bulb and brain, as well as the medial (middle) group of subnuclei, are intricately connected (related to olfactory functions, or sense of smell).
The basolateral group, which has several connections with the cerebral cortex, particularly the prefrontal cortex inside the frontal lobes, is defined as being below and to the side.
The brain stem, hypothalamus, and sensory structures are all connected by several pathways to the central and anterior (front) group of nuclei.
Hence, the correct answer is Amygdala.
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