Adaptation to average duration
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Adaptation to average duration Jennifer E. Corbett 1,2 & Berfin Aydın 3 & Jaap Munneke 1,2 Accepted: 1 September 2020 # The Author(s) 2020
Abstract There has been a recent surge of research examining how the visual system compresses information by representing the average properties of sets of similar objects to circumvent strict capacity limitations. Efficient representation by perceptual averaging helps to maintain the balance between the needs to perceive salient events in the surrounding environment and sustain the illusion of stable and complete perception. Whereas there have been many demonstrations that the visual system encodes spatial average properties, such as average orientation, average size, and average numerosity along single dimensions, there has been no investigation of whether the fundamental nature of average representations extends to the temporal domain. Here, we used an adaptation paradigm to demonstrate that the average duration of a set of sequentially presented stimuli negatively biases the perceived duration of subsequently presented information. This negative adaptation aftereffect is indicative of a fundamental visual property, providing the first evidence that average duration is encoded along a single visual dimension. Our results not only have important implications for how the visual system efficiently encodes redundant information to evaluate salient events as they unfold within the dynamic context of the surrounding environment, but also contribute to the long-standing debate regarding the neural underpinnings of temporal encoding. Keywords Perceptual averaging . Temporal vision . Visual aftereffect
Introduction Our perceptions of the durations of different internal and external events can be influenced by a number of different biological, perceptual, and cognitive biases, raising the question of how we are able to maintain a relatively stable perception of time within our dynamic surroundings. The visual system is not only famously limited in its capacity to process a fraction of information available in a single glance, but also in its ability to process information over time. For example, in addition to being restricted to simultaneously attending Electronic supplementary material The online version of this article (https://doi.org/10.3758/s13414-020-02134-8) contains supplementary material, which is available to authorized users. * Jennifer E. Corbett [email protected] 1
College of Health, Medical, and Life Sciences, Division of Psychology, Brunel University London, MJ-122, Kingston Lane, London, Uxbridge UB8 3PH, UK
2
Centre for Cognitive Neuroscience, Brunel University London, London, UK
3
Aysel Sabuncu Brain Research Center and Interdisciplinary Neuroscience Program, Bilkent University, Ankara, Turkey
approximately four individual objects at any given moment (Pylyshyn & Storm, 1988), observers are also able to process only a fraction of the information in streams of sequentially presented items (e.g., the “attentional blink”; Raymond et al., 1992). In cont
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