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Hogendoorn H, Verstraten FA, Johnston A. Spatially localized time shifts of the perceptual stream. Front Psychol. 2010;1:181doi: 10.3389/fpsyg.2010.00181.
Hogendoorn, H., Verstraten, F. A., & Johnston, A. (2010). Spatially localized time shifts of the perceptual stream. Frontiers in psychology, 1181. https://doi.org/10.3389/fpsyg.2010.00181
Hogendoorn, Hinze, et al. "Spatially localized time shifts of the perceptual stream." Frontiers in psychology vol. 1 (2010): 181. doi: https://doi.org/10.3389/fpsyg.2010.00181
Hogendoorn H, Verstraten FA, Johnston A. Spatially localized time shifts of the perceptual stream. Front Psychol. 2010 Nov 04;1:181. doi: 10.3389/fpsyg.2010.00181. eCollection 2010. PMID: 21833242; PMCID: PMC3153791.
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Front Psychol. 2010 Nov 04;1:181. doi: 10.3389/fpsyg.2010.00181. eCollection 2010.

Spatially localized time shifts of the perceptual stream.

Frontiers in psychology

Hinze Hogendoorn, Frans A J Verstraten, Alan Johnston

Affiliations

  1. Helmholtz Institute, Experimental Psychology Division, Utrecht University Utrecht, Netherlands.

PMID: 21833242 PMCID: PMC3153791 DOI: 10.3389/fpsyg.2010.00181

Abstract

Visual events trigger representations in different locations and times in the brain. In experience, however, these various neural responses refer to a single unified cause. To investigate how representations might be brought into temporal alignment, we attempted to locally manipulate neural processing in such a way that identical, simultaneous sequences would appear temporally misaligned. After adaptation to a 20 Hz sequentially expanding and contracting concentric grating, a running clock presented in the adapted region of the visual field appeared advanced relative to an identical clock presented simultaneously in an unadapted region. No such effect was observed following 5-Hz adaptation. Clock time reports following an exogenous cue showed the same effect of adaptation on perceived time, demonstrating that the apparent temporal misalignment was not mediated by differences in target selection or allocation of attention. This effect was not mediated by the apparent speed of the adapted clock: a clock in a 20-Hz-adapted spatial location appeared slower than a clock in a 5-Hz-adapted location, rather than faster. Furthermore, reaction times for a clock-hand orientation discrimination task were the same following 5- and 20-Hz adaptation, indicating that neural processing latencies were not differentially affected. Altogether, these findings suggest that the fragmented perceptual stream might be actively brought into temporal alignment through adaptive local mechanisms operating in spatially segregated regions of the visual field.

Keywords: attention; flicker; temporal alignment; temporal binding; time perception

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