Fig. 1: Experimental paradigm and neural responses during working memory tasks.
From: Supramodal and cross-modal representations of working memory in higher-order cortex
a Experimental paradigm for a comparative approach between tactile and visual working memories. Participants performed two within-modal (tactile-to-tactile, TT, and visual-to-visual, VV) and two cross-modal (tactile-to-visual, TV, and visual-to-tactile, VT) delayed match-to-sample tasks. During within-modal tasks, participants were presented with a braille sample and a braille probe either visually (VV) or tactually (TT) with a 7-s delay period between them, and they indicated whether the probe matched the sample. The procedure for cross-modal tasks was the same as for the within-modal tasks, except that the sample and the probe were presented in different sensory modalities. b Tactile and visual stimuli. Five braille patterns were presented either tactually or visually. c Surface maps of brain activation during each task. The colored areas show the mean BOLD response magnitude (percent signal change) across participants (p < 0.05, FDR-corrected), mapped on the inflated brain for sample onset, delay period, and probe onset of each task. Black and white arrows pointing to specific brain regions highlight significant activation in the targeted areas. lh left hemisphere, rh right hemisphere, S superior, I inferior, A anterior, P posterior, L lateral, M medial.
