کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6282530 | 1615142 | 2013 | 6 صفحه PDF | دانلود رایگان |
- We report behavioural and ERP measures to target detection.
- Targets in co-linear sequences enhanced detection time and ERP peak latencies.
- Targets in co-circular sequences enhanced ERP latencies at later processing stages.
- The human brain optimises the processing of common natural geometric regularities.
Our complex visual environment is constrained by natural geometric regularities, including spatiotemporal regularity, co-linearity and co-circularity. To investigate human visual processing associated with these regularities we directly compared the neural processes in encoding dynamic co-linearity and co-circularity using event-related potentials (ERPs). By recording ERPs to a target bar presented alone (no context) or in a dynamic sequence of bars following a co-linear or co-circular path, we observed earlier ERPs to targets embedded in co-linear sequence at early (66Â ms) and later stages (197Â ms) of post-target processing. In contrast, targets in co-circular sequence only modulated ERPs at later stages of processing. It is proposed that early visual processing may have adapted to efficiently process co-linearity to improve target identification, whereas sensitivity to co-circularity does not occur until later stages of processing. These results have significant impact for understanding brain-behaviour relationships when processing natural geometric regularities.
Journal: Neuroscience Letters - Volume 556, 27 November 2013, Pages 46-51