Revisiting the global effect and inhibition of return
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- 作者：Jelmer P. De Vries ; Stefan Van der Stigchel…
- 关键词：Inhibition of return ; Global effect ; Saccadic landing points ; Saccade averaging ; Motor attraction ; Visual selection
- 刊名：Experimental Brain Research
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：234
- 期：10
- 页码：2999-3009
- 全文大小：628 KB
- 刊物类别：Biomedical and Life Sciences
- 刊物主题：Biomedicine
Neurosciences
Neurology - 出版者：Springer Berlin / Heidelberg
- ISSN：1432-1106
- 卷排序：234
文摘
Saccades toward previously cued locations have longer latencies than saccades toward other locations, a phenomenon known as inhibition of return (IOR). Watanabe (Exp Brain Res 138:330–342. doi:10.1007/s002210100709, 2001) combined IOR with the global effect (where saccade landing points fall in between neighboring objects) to investigate whether IOR can also have a spatial component. When one of two neighboring targets was cued, there was a clear bias away from the cued location. In a condition where both targets were cued, it appeared that the global effect magnitude was similar to the condition without any cues. However, as the latencies in the double cue condition were shorter compared to the no cue condition, it is still an open question whether these results are representative for IOR. Considering the double cue condition can provide valuable insight into the interaction of the mechanisms underlying the two phenomena, here, we revisit this condition in an adapted paradigm. Our paradigm does result in longer latencies for the cued locations, and we find that the magnitude of the global effect is reduced significantly. Unexpectedly, this holds even when only including saccades with the same latencies for both conditions. Thus, the increased latencies associated with IOR cannot directly explain the reduction in global effect. The global effect reduction can likely best be seen as either a result of short-term depression of exogenous visual signals or a result of IOR established at the center of gravity of cues.