Kuroda Tsuyoshi, Hasuo Emi, Labonté Katherine, Laflamme Vincent, Grondin Simon
Kyushu University, Japan.
Kyushu University, Japan.
Acta Psychol (Amst). 2014 Jun;149:134-41. doi: 10.1016/j.actpsy.2013.11.013. Epub 2013 Dec 21.
We investigated the discrimination of two neighboring intra- or inter-modal empty time intervals marked by three successive stimuli. Each of the three markers was a flash (visual-V) or a sound (auditory-A). The first and last markers were of the same modality, while the second one was either A or V, resulting in four conditions: VVV, VAV, AVA and AAA. Participants judged whether the second interval, whose duration was systematically varied, was shorter or longer than the 500-ms first interval. Compared with VVV and AAA, discrimination was impaired with VAV, but not so much with AVA (in Experiment 1). Whereas VAV and AVA consisted of the same set of single intermodal intervals (VA and AV), discrimination was impaired in the VAV compared to the AVA condition. This difference between VAV and AVA could not be attributed to the participants' strategy to perform the discrimination task, e.g., ignoring the standard interval or replacing the visual stimuli with sounds in their mind (in Experiment 2). These results are discussed in terms of sequential grouping according to sensory similarity.
我们研究了由三个连续刺激标记的两个相邻的模态内或模态间空时间间隔的辨别情况。三个标记中的每一个都是一次闪光（视觉-V）或一声声音（听觉-A）。第一个和最后一个标记具有相同的模态，而第二个标记要么是A要么是V，从而产生四种条件：VVV、VAV、AVA和AAA。参与者判断第二个间隔（其持续时间被系统地改变）比500毫秒的第一个间隔短还是长。与VVV和AAA相比，VAV条件下的辨别能力受损，但AVA条件下受损程度没那么大（实验1）。虽然VAV和AVA由相同的一组单模态间间隔（VA和AV）组成，但与AVA条件相比，VAV条件下的辨别能力受损。VAV和AVA之间的这种差异不能归因于参与者执行辨别任务的策略，例如忽略标准间隔或在脑海中用声音替换视觉刺激（实验2）。根据感官相似性，我们从序列分组的角度对这些结果进行了讨论。
