偏差声音干扰刺激对视觉注意网络系统的影响

Deviant Sound Stimuli Influence on the Visual Attentional Networks

结合注意网络测量工具和听视ODDBALL干扰范式,考察偏差声音干扰刺激的出现对注意网络系统不同功能的影响。结果发现,声音刺激序列下,视觉线索唤醒效应均消失;标准声音刺激下,不存在线索的脱离和转移效应;偏差声音刺激下,出现线索脱离和转移效应。研究表明,注意网络中的警觉功能具有超通道加工机制,偏差刺激下视觉注意系统中注意定向和线索转移效应的出现表明偏差干扰效应主要由偏差刺激引起的注意脱离和注意转移损耗部分引起。

The unexpected changes of sounds will impact negatively on performance in an unrelated task.In the present study,the influence of unexpected changes of sounds on attentional networks is tested in an auditory-visual cross-modal distraction paradigm and an attention network test.The experiment consists of three parts.Experiment A is a normal visual ANT(Attention Network Test,ANT).The results showed that cue alerting effect disappeared in deviant and standard sound condition.Cue disengaging effect and cue orienting effect cannot be found in standard sound condition,but both reappeared in deviant sound condition.We find that there is no cue alerting effect in a continuous sequence.The result demonstrates that the irrelevant auditory sound increase vigilance as a warning stimulus and visual cue doesn’t.The alerting network get the optimal state to the performance from auditory modal.In the meantime,there are no cue disengaging and orienting effect under standard auditory sounds,it declares that the occurrence of standard sounds can accelerate the shifting of attention,while the deviant sounds will slow the shifting.The results indicate that the predictive mechanism to continuous sequence of irrelevant auditory stimuli influent attentional alerting,and the distraction in the oddball task involved some facilitation by standard sounds.