Nonlinear representation of valence in amygdala and auditory cortex during perception of emotional sounds

Each sound was presented for 6 s, and after the stimulus block a forced-choice response screen appeared, and the subjects had to judge whether there were more animate or inanimate sound clips during the block (an implicit emotion perception task). [...]there are both efferent and afferent connections from the amygdala to auditory cortex (Yukie, 2002). [...]the present data cannot differentiate whether amygdala predominantly modulates auditory cortex or the other way round.