Attention to the person or the emotion: Underlying activations in MEG

Face processing in adolescents with and without epilepsy

“…With the temporal smearing that occurs with fMRI, the current data allow us to suggest that the timing of this activation is early, around 170 ms. The M220 sources for upright and inverted faces were consistent with an adult MEG memory study for faces (Bayle et al, 2007), where significant right-lateralised activation was seen in the posterior cingulate and inferior parietal cortex (area BA40), which has been shown to be linked with visual memory (Ding et al, 2000).…”

“…As with the P2 in ERP studies, the peak following the M170, the M220, is less studied than the P1/M100 and its role in face processing is still being determined. In a face memory task, the M220 sources for upright and inverted faces showed right-lateralised activation in the posterior cingulate and inferior parietal cortex (area BA40) (Bayle et al, 2007), which has been shown to be linked with visual memory (Ding et al, 2000); the left hemisphere homologues of which are suggested to have a role in verbal memory (Ravizza et al, 2004;Romero et al, 2006).…”