Morrone M Concetta, Ross John, Burr David
Facoltà di Psicologia, Università Vita-Salute San Raffaele, Via Olgettina 58, Milano 20132, Italy.
Nat Neurosci. 2005 Jul;8(7):950-4. doi: 10.1038/nn1488.
There is now considerable evidence that space is compressed when stimuli are flashed shortly before or after the onset of a saccadic eye movement. Here we report that short intervals of time between two successive perisaccadic visual (but not auditory) stimuli are also underestimated, indicating a compression of perceived time. We were even more surprised that in a critical interval before saccades, perceived temporal order is consistently reversed. The very similar time courses of spatial and temporal compression suggest that both are mediated by a common neural mechanism, probably related to the predictive shifts that occur in receptive fields of many visual areas at the time of saccades.
现在有大量证据表明，当在扫视眼动开始前不久或之后闪现刺激时，空间会被压缩。在此我们报告，两个连续的扫视周围视觉（而非听觉）刺激之间的短时间间隔也被低估，这表明感知时间被压缩。我们更惊讶的是，在扫视之前的一个关键间隔内，感知的时间顺序始终被颠倒。空间和时间压缩非常相似的时间进程表明，两者都是由一种共同的神经机制介导的，这可能与扫视时许多视觉区域感受野中发生的预测性移位有关。
