Eye Position Influences Auditory Responses in Primate Inferior Colliculus

Summary The goal of the current study was to investigate the frame of reference at an early point in the ascending We examined the frame of reference of auditory reauditory pathway, namely the inferior colliculus (IC). The sponses in the inferior colliculus in monkeys fixating IC is situated above the convergence of binaural signals visual stimuli at different locations. Eye position moduin the superior olivary complex (for review, see Ehret, lated the level of auditory responses in 33% of the 1997), and nearly all input to all higher areas passes neurons we encountered, but it did not appear to shift through it. Lesions of the IC can cause deficits in sound their spatial tuning. The effect of eye position on audilocalization behavior (Wagner, 1993; Kelly and Kavatory responses was substantial—comparable in magnagh, 1994; Zrull and Coleman, 1997). Neurons sensitive nitude to that of sound location. The eye position signal to the locations of sounds in space have been reported appeared to interact with the auditory responses in at by a variety of studies using free field acoustic stimuli least a partly multiplicative fashion. We conclude that