Young aphasia case study: Event-related fields and sources of naming-related responses in A. and control

ERFs over posterior left and right sensors for A.’s succesful picture naming (purple) and word-finding problem (green) trials, displayed between -200 and 700 ms. The time window selected for the topographical maps and source analysis was identified by the cluster-based permutation analysisis (indicated by the shaded area). The source map values were thresholded at t values more extreme than ±2 and Cohen’s d more extreme than t ±0.2 (white masks in the colour bars). Positive values indicate stronger responses for naming vs word-finding trials; negative values indicate stronger responses for word-finding vs naming trials.

Slices are depicted in neurological convention (i.e., left hemisphere on the left-hand side). L = left; R = right.