A decisional account of subjective inflation of visual perception at the periphery
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 occur...
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19433921_v77_n1_p258_Solovey http://hdl.handle.net/20.500.12110/paper_19433921_v77_n1_p258_Solovey |
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paper:paper_19433921_v77_n1_p258_Solovey2023-06-08T16:32:22Z A decisional account of subjective inflation of visual perception at the periphery Solovey, Guillermo Perceptual decision making Peripheral vision Psychophysics Signal detection theory Subjective perception adaptive behavior attention decision making eye movement human perceptive discrimination physiology psychomotor performance retina fovea vision young adult Attention Decision Making Eye Movements Feedback, Psychological Fovea Centralis Humans Psychomotor Performance Signal Detection, Psychological Vision, Ocular Visual Perception Young Adult 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 successfully 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. © 2014, The Psychonomic Society, Inc. Fil:Solovey, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19433921_v77_n1_p258_Solovey http://hdl.handle.net/20.500.12110/paper_19433921_v77_n1_p258_Solovey |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Perceptual decision making Peripheral vision Psychophysics Signal detection theory Subjective perception adaptive behavior attention decision making eye movement human perceptive discrimination physiology psychomotor performance retina fovea vision young adult Attention Decision Making Eye Movements Feedback, Psychological Fovea Centralis Humans Psychomotor Performance Signal Detection, Psychological Vision, Ocular Visual Perception Young Adult |
| spellingShingle |
Perceptual decision making Peripheral vision Psychophysics Signal detection theory Subjective perception adaptive behavior attention decision making eye movement human perceptive discrimination physiology psychomotor performance retina fovea vision young adult Attention Decision Making Eye Movements Feedback, Psychological Fovea Centralis Humans Psychomotor Performance Signal Detection, Psychological Vision, Ocular Visual Perception Young Adult Solovey, Guillermo A decisional account of subjective inflation of visual perception at the periphery |
| topic_facet |
Perceptual decision making Peripheral vision Psychophysics Signal detection theory Subjective perception adaptive behavior attention decision making eye movement human perceptive discrimination physiology psychomotor performance retina fovea vision young adult Attention Decision Making Eye Movements Feedback, Psychological Fovea Centralis Humans Psychomotor Performance Signal Detection, Psychological Vision, Ocular Visual Perception Young Adult |
| description |
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 successfully 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. © 2014, The Psychonomic Society, Inc. |
| author |
Solovey, Guillermo |
| author_facet |
Solovey, Guillermo |
| author_sort |
Solovey, Guillermo |
| title |
A decisional account of subjective inflation of visual perception at the periphery |
| title_short |
A decisional account of subjective inflation of visual perception at the periphery |
| title_full |
A decisional account of subjective inflation of visual perception at the periphery |
| title_fullStr |
A decisional account of subjective inflation of visual perception at the periphery |
| title_full_unstemmed |
A decisional account of subjective inflation of visual perception at the periphery |
| title_sort |
decisional account of subjective inflation of visual perception at the periphery |
| publishDate |
2014 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19433921_v77_n1_p258_Solovey http://hdl.handle.net/20.500.12110/paper_19433921_v77_n1_p258_Solovey |
| work_keys_str_mv |
AT soloveyguillermo adecisionalaccountofsubjectiveinflationofvisualperceptionattheperiphery AT soloveyguillermo decisionalaccountofsubjectiveinflationofvisualperceptionattheperiphery |
| _version_ |
1768545623161700352 |