The effect of visual reliability on auditory–visual integration: an event-related potential study Academic Article uri icon

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abstract

  • To investigate the neural mechanisms of auditory-visual integration, we recorded event-related potentials during a word-identification task, in which the stimulus was presented in the auditory (A), visual (V), and in the auditory-visual (AV) modalities. The reliability of the visual information varied at the high-reliability (VH) and low-reliability (VL) levels in both the V and AV presentations. The modulation of sensory integrations owing to the variation of cue reliability was revealed in the format of the double-difference waveform generated by subtracting the difference waveform AVL-(A+VL) from the difference waveform AVH-(A+VH). The results demonstrated (i) the early modulation of the activity in the auditory and visual cortex; (ii) subsequent spatial-temporal sequence of activities mostly occurred in multisensory areas; and (iii) the timing of final outputs of AV integration at around 370-410 ms poststimulus.

authors

  • Liu, Qiang
  • Qiu, Jiang
  • Chen, Antao
  • Yang, Juan
  • Zhang, Qinglin
  • Sun, Hongjin

publication date

  • November 2007