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. Author manuscript; available in PMC: 2007 Dec 1.
Published in final edited form as: Exp Brain Res. 2007 Jul 31;183(4):465–476. doi: 10.1007/s00221-007-1060-7

Figure 1.

Figure 1

Schematic account of spatial modulations in the crossmodal congruency effect (CCE). The effects are illustrated for a left hand index finger target (the ‘lightning strike’), however the congruency and spatial relationships apply to all four possible target positions. The dashed ellipses schematically represent the approximate proposed shape and size of the ‘peri-hand’ area. The circles represent a ‘congruent’ visual distractor - presented next to the same digit (the same elevation in the task - either ‘upper’ or ‘lower,’ when the hands are holding the tools). The stars represent incongruent visual distractors. Filled symbols represent targets and distractors on the same tool. Open symbols represent target and distractors on different tools. Performance is, on average, worse in incongruent trials with respect to congruent trials. Most importantly, however, this crossmodal congruency effect is larger when target and distractor stimuli are presented on the same side of space (the same hand) relative to when they are presented on different sides (hands).