Figure 2.

Neurophysiology and electrode reconstruction. Individually reconstructed MRIs from each participant and ERFP activity of electrodes placed approximately over primary auditory cortex. MRI and ERFP activity indicate that electrodes E14 and E15 in participant MDJ and electrodes E10 and E11 in participant BD are placed over the STG, and most likely capture activity from A1. Waveforms illustrate ERFP activity to standard bisensory stimuli, collapsed across attention conditions, in electrode pairs that capture dipolar moments during early sensory processing. The gray bars indicate the time interval chosen for testing significant evoked sensory activity. Below each participant's reconstructed MRI is a list of the Talairach coordinates and corresponding Brodmann area of each electrode of interest.