کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
921158 | 920758 | 2011 | 9 صفحه PDF | دانلود رایگان |

Converging evidence indicates that prior knowledge plays an important role in multisensory integration. However, the neural mechanisms underlying the processes with which prior knowledge is integrated with current sensory information remains unknown. In this study, we measured event-related potentials (ERPs) while manipulating prior knowledge using a novel visual letter recognition task in which auditory information was always presented simultaneously. The color of the letters was assigned to a particular probability of being associated with audiovisual congruency (e.g., green = high probability (HP) and blue = low probability (LP)). Results demonstrate that this prior began affecting reaction times to the congruent audiovisual stimuli at about the 900th trial. Consequently, the ERP data was analyzed in two phases: the “early phase” (
► We studied the effect of prior knowledge in a task involving multisensory processing.
► The task involved visual letter recognition with simultaneous auditory presentation.
► The color of the letters indicated the probability of audiovisual congruency.
► Both reaction time and brain's event-related potentials (ERPs) were recorded.
► ERP Waveforms for the probability effect was found at different stages of the task.
Journal: Biological Psychology - Volume 87, Issue 2, May 2011, Pages 200–208