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Abstract:

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.

Registro:

Documento: Artículo
Título:A decisional account of subjective inflation of visual perception at the periphery
Autor:Solovey, G.; Graney, G.G.; Lau, H.
Filiación:Department of Psychology, Columbia University, New York, NY, United States
Instituto de Cálculo, FCEyN, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, Pabellón II, Buenos Aires, C1428EGA, Argentina
Laboratorio de Neurociencia Integrativa, Buenos Aires, Argentina
CONICET, Buenos Aires, Argentina
Department of Psychology, University of California Los Angeles, Los Angeles, CA, United States
Palabras clave: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
Año:2014
Volumen:77
Número:1
Página de inicio:258
Página de fin:271
DOI: http://dx.doi.org/10.3758/s13414-014-0769-1
Título revista:Attention, Perception, and Psychophysics
Título revista abreviado:Atten. Percept. Psychophys.
ISSN:19433921
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19433921_v77_n1_p258_Solovey

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Citas:

---------- APA ----------
Solovey, G., Graney, G.G. & Lau, H. (2014) . A decisional account of subjective inflation of visual perception at the periphery. Attention, Perception, and Psychophysics, 77(1), 258-271.
http://dx.doi.org/10.3758/s13414-014-0769-1
---------- CHICAGO ----------
Solovey, G., Graney, G.G., Lau, H. "A decisional account of subjective inflation of visual perception at the periphery" . Attention, Perception, and Psychophysics 77, no. 1 (2014) : 258-271.
http://dx.doi.org/10.3758/s13414-014-0769-1
---------- MLA ----------
Solovey, G., Graney, G.G., Lau, H. "A decisional account of subjective inflation of visual perception at the periphery" . Attention, Perception, and Psychophysics, vol. 77, no. 1, 2014, pp. 258-271.
http://dx.doi.org/10.3758/s13414-014-0769-1
---------- VANCOUVER ----------
Solovey, G., Graney, G.G., Lau, H. A decisional account of subjective inflation of visual perception at the periphery. Atten. Percept. Psychophys. 2014;77(1):258-271.
http://dx.doi.org/10.3758/s13414-014-0769-1