Valsecchi Matteo, Turatto Massimo
Department of Cognitive Sciences and Education, University of Trento, Corso Bettini, 31, 38068, Rovereto, Italy.
Psychol Res. 2009 Jan;73(1):23-33. doi: 10.1007/s00426-008-0142-x. Epub 2008 Mar 5.
In a visual oddball task the presentation of rare targets induces a prolonged microsaccadic inhibition as compared to standards. Here, we replicated this effect also in the auditory modality. In addition, although auditory standards induced a more limited modulation of microsaccadic frequency as compared to visual standards, auditory oddballs induced a prolonged microsaccadic inhibition. With bimodal standard stimuli the microsaccadic response was determined by the attended modality, resembling that produced by attended unimodal stimuli. The present findings support the idea that the microsaccadic response to oddball and standard stimuli is partly driven by cognitive mechanisms common to both the visual and the auditory modality, and that microsaccades can be used as an implicit behavioral measure of ongoing cognitive processes.
在视觉Oddball任务中，与标准刺激相比，罕见目标的呈现会诱发延长的微扫视抑制。在此，我们在听觉模态中也复制了这一效应。此外，尽管与视觉标准相比，听觉标准诱发的微扫视频率调制更为有限，但听觉Oddball诱发了延长的微扫视抑制。对于双峰标准刺激，微扫视反应由被关注的模态决定，类似于被关注的单峰刺激所产生的反应。目前的研究结果支持这样一种观点，即对Oddball和标准刺激的微扫视反应部分是由视觉和听觉模态共有的认知机制驱动的，并且微扫视可以用作正在进行的认知过程的一种隐性行为测量指标。
