Time course of the use of chromatic and achromatic facial information for sex categorization

Dupuis-Roy, Nicolas; Faghel-Soubeyrand, Simon; Gosselin, F.

doi:10.1016/j.visres.2018.08.004

Cited by 16 publications

(15 citation statements)

References 67 publications

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“…If specific features are used at any given moment, these are the features whose processing will be modulated by expectations. Such temporally variable information sampling has been observed in several previous studies (e.g., Blais et al, 2012;Caplette et al, 2016;Dupuis-Roy, Faghel-Soubeyrand & Gosselin, 2019;Hughes et al, 1996;Neri & Levi, 2007;Schyns & Oliva, 1994;Vinette, Gosselin & Schyns, 2004). Moreover, expectations seem to have accelerated the use of low SFs, in that it started earlier when a specific object was expected.…”

Section: Discussionsupporting

confidence: 68%

Object expectations alter information use during visual recognition

Caplette¹,

Gosselin²,

West³

2019

Preprint

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Prior expectations influence how we perceive and recognize objects. However, how they do so remains unclear, especially in the case of real-world complex objects. Expectations of objects may affect which features are used to recognize them subsequently. In this study, we used reverse correlation in neurotypical participants to reveal with high precision how the use of spatial frequencies across time is modulated by everyday object expectations in a recognition task. We show that coarse information leads to accurate responses earlier when an object is expected, indicating that subjects use diagnostic features earlier in this situation. We also demonstrate an increased variability in the later use of coarse information depending on the expected object, indicating that subjects adopt a more specialized recognition strategy when they have a specific object expectation. In summary, our results reveal how expectations of real-world complex objects affect the use of visual information across time.

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Section: Discussionsupporting

confidence: 68%

Object expectations alter information use during visual recognition

Caplette¹,

Gosselin²,

West³

2019

Preprint

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mentioning

confidence: 99%

“…One strategy that can be applied by the visual system to overcome this limitation is to use visual information received in different time windows to process different features (e.g., different regions of space, colors or spatial frequencies). This is often referred to as top-down attention being guided from one Processing level Time Retina IT V1 sensible strategy), or an attempt to compensate anatomical limitations (e.g., process color from the information received earlier because color is processed more slowly [8][9] ). These strategies are likely to depend on the expected input and on the task.…”

mentioning

confidence: 99%

“…How information received at different moments within a fixation is processed for object recognition is rarely investigated, possibly in part because the distinction between presentation (or reception) time and processing time is not often discussed or appreciated (but see 10). Still, a few behavioral studies have examined this question, either by randomly revealing image features across time 9,[11][12][13][14] or by adding noise that is randomly varying across time [15][16] , and by correlating the samples with the subject's response.…”

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confidence: 99%

“…In this study, we aimed to perform such a decomposition. To do so, we randomly sampled the features of a face across time while subjects were performing a gender or expression recognition task 9,14 (Figure 2; Movies S1-S4) and while their EEG activity was recorded. Faces were chosen as stimuli because they are important social stimuli that human brains are wired by evolutionary pressures to process efficiently; moreover, faces are particularly well suited to a spatial sampling of information as they all are composed of the same spatial features with essentially the same spatial configuration.…”

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confidence: 99%

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Disentangling presentation and processing times in the brain

Caplette

Ince

Jerbi

et al. 2019

Preprint

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Visual object recognition seems to occur almost instantaneously. However, not only does it require hundreds of milliseconds of processing, but our eyes also typically fixate the object for hundreds of milliseconds. Consequently, information reaching our eyes at different moments is processed in the brain together. Moreover, information received at different moments during fixation is likely to be processed differently, notably because different features might be selectively attended at different moments. Using a random

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Object expectations alter information use during visual recognition

2021

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Prior expectations influence how we perceive and recognize objects. However, how they do so remains unclear, especially in the case of real-world complex objects. Expectations of objects may affect which features are used to recognize them subsequently. In this study, we used reverse correlation in neurotypical participants to reveal with high precision how the use of information across time is modulated by everyday object expectations in a recognition task. We show that coarse information leads to accurate responses earlier when an object is expected, indicating that observers use diagnostic features earlier in this situation. We also demonstrate an increased variability in the use of coarse information depending on the expected object, indicating that observers adopt a more specialized recognition strategy when they expect a specific object. In summary, our results reveal how expectations of real-world complex objects affect the use of visual information across time.

show abstract

Time course of the use of chromatic and achromatic facial information for sex categorization

Cited by 16 publications

References 67 publications

Object expectations alter information use during visual recognition

Object expectations alter information use during visual recognition

Disentangling presentation and processing times in the brain

Object expectations alter information use during visual recognition

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