Where is the activity center for negative emotions? A: in the amygdala B: in the hippocampus C: in the left prefrontal cortex D: in the right prefrontal cortex

By referring to the limbic system, the author intends to show ________. [A] its function in our dreams [B] the mechanism of REM sleep [C] the relation of dreams to emotions [D] its difference from the prefrontal cortex