Fig. 2.

A. Free-response paradigm task structure. An avatar face was always on the screen. Visual, auditory and audiovisual stimuli were randomly presented with an inter stimulus interval of 1–3 seconds drawn from a uniform distribution. Responses within a 2 second window after stimulus onset were considered to be hits. Responses in the inter-stimulus interval are considered to be false alarms and led to timeouts. B. Mean reaction times obtained by pooling across all sessions as a function of SNR for the unisensory and multisensory conditions for one monkey. Error bars denote standard error of the mean estimated using bootstrapping. X-axes denote SNR in dB. Y-axes depict RT in milliseconds. Figures reprinted from Chandrasekaran et al. 2011