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Article: A decisional account of subjective inflation of visual perception at the periphery

TitleA decisional account of subjective inflation of visual perception at the periphery
Authors
KeywordsPsychophysics
Subjective perception
Signal detection theory
Peripheral vision
Perceptual decision making
Issue Date2014
Citation
Attention, Perception, and Psychophysics, 2014, v. 77, n. 1, p. 258-271 How to Cite?
Abstract© 2014, The Psychonomic Society, Inc. Human peripheral vision appears vivid compared to foveal vision; the subjectively perceived level of detail does not seem to drop abruptly with eccentricity. This compelling impression contrasts with the fact that spatial resolution is substantially lower at the periphery. A similar phenomenon occurs in visual attention, in which subjects usually overestimate their perceptual capacity in the unattended periphery. We have previously shown that at identical eccentricity, low spatial attention is associated with liberal detection biases, which we argue may reflect inflated subjective perceptual qualities. Our computational model suggests that this subjective inflation occurs because under the lack of attention, the trial-by-trial variability of the internal neural response is increased, resulting in more frequent surpassing of a detection criterion. In the current work, we hypothesized that the same mechanism may be at work in peripheral vision. We investigated this possibility in psychophysical experiments in which participants performed a simultaneous detection task at the center and at the periphery. Confirming our hypothesis, we found that participants adopted a conservative criterion at the center and liberal criterion at the periphery. Furthermore, an extension of our model predicts that detection bias will be similar at the center and at the periphery if the periphery stimuli are magnified. A second experiment success fully confirmed this prediction. These results suggest that, although other factors contribute to subjective inflation of visual perception in the periphery, such as top-down filling-in of information, the decision mechanism may be relevant too.
Persistent Identifierhttp://hdl.handle.net/10722/242644
ISSN
2023 Impact Factor: 1.7
2023 SCImago Journal Rankings: 0.833
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSolovey, Guillermo-
dc.contributor.authorGraney, Guy Gerard-
dc.contributor.authorLau, Hakwan-
dc.date.accessioned2017-08-10T10:51:12Z-
dc.date.available2017-08-10T10:51:12Z-
dc.date.issued2014-
dc.identifier.citationAttention, Perception, and Psychophysics, 2014, v. 77, n. 1, p. 258-271-
dc.identifier.issn1943-3921-
dc.identifier.urihttp://hdl.handle.net/10722/242644-
dc.description.abstract© 2014, The Psychonomic Society, Inc. Human peripheral vision appears vivid compared to foveal vision; the subjectively perceived level of detail does not seem to drop abruptly with eccentricity. This compelling impression contrasts with the fact that spatial resolution is substantially lower at the periphery. A similar phenomenon occurs in visual attention, in which subjects usually overestimate their perceptual capacity in the unattended periphery. We have previously shown that at identical eccentricity, low spatial attention is associated with liberal detection biases, which we argue may reflect inflated subjective perceptual qualities. Our computational model suggests that this subjective inflation occurs because under the lack of attention, the trial-by-trial variability of the internal neural response is increased, resulting in more frequent surpassing of a detection criterion. In the current work, we hypothesized that the same mechanism may be at work in peripheral vision. We investigated this possibility in psychophysical experiments in which participants performed a simultaneous detection task at the center and at the periphery. Confirming our hypothesis, we found that participants adopted a conservative criterion at the center and liberal criterion at the periphery. Furthermore, an extension of our model predicts that detection bias will be similar at the center and at the periphery if the periphery stimuli are magnified. A second experiment success fully confirmed this prediction. These results suggest that, although other factors contribute to subjective inflation of visual perception in the periphery, such as top-down filling-in of information, the decision mechanism may be relevant too.-
dc.languageeng-
dc.relation.ispartofAttention, Perception, and Psychophysics-
dc.subjectPsychophysics-
dc.subjectSubjective perception-
dc.subjectSignal detection theory-
dc.subjectPeripheral vision-
dc.subjectPerceptual decision making-
dc.titleA decisional account of subjective inflation of visual perception at the periphery-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.3758/s13414-014-0769-1-
dc.identifier.pmid25248620-
dc.identifier.scopuseid_2-s2.0-84922005259-
dc.identifier.volume77-
dc.identifier.issue1-
dc.identifier.spage258-
dc.identifier.epage271-
dc.identifier.eissn1943-393X-
dc.identifier.isiWOS:000347454200018-
dc.identifier.issnl1943-3921-

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