Psychophysics Phenomenologized? Sensation and Decision in Visual Motion Perception

Experimental phenomenology and psychophysics are two rather different approaches to the study of perception, and rely on first-person descriptions and third-person measurements of the percept, respectively. Yet, a common ground may be found in the original goal, shared by both approaches, of addres...

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Autores principales:	Regina Gregori Grgic, Claudio de’Sperati
Formato:	article
Lenguaje:	EN FR IT
Publicado:	Rosenberg & Sellier 2016
Materias:	sensation decision perception Aesthetics BH1-301 Ethics BJ1-1725
Acceso en línea:	https://doaj.org/article/03ceac945b63431e8db89cc2e438996b
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spelling	oai:doaj.org-article:03ceac945b63431e8db89cc2e438996b2021-12-02T12:25:40ZPsychophysics Phenomenologized? Sensation and Decision in Visual Motion Perception10.13128/Phe_Mi-195902280-78532239-4028https://doaj.org/article/03ceac945b63431e8db89cc2e438996b2016-11-01T00:00:00Zhttps://oaj.fupress.net/index.php/pam/article/view/7109https://doaj.org/toc/2280-7853https://doaj.org/toc/2239-4028 Experimental phenomenology and psychophysics are two rather different approaches to the study of perception, and rely on first-person descriptions and third-person measurements of the percept, respectively. Yet, a common ground may be found in the original goal, shared by both approaches, of addressing the conscious dimension of perception. Here we argue that, despite being objective and quantitatively-oriented, psychophysics can, with some cautions, recover certain simple subjective aspects of conscious perception. Building upon the results of a motion perception experiment, we show how to transform the ratings of subjective visibility into a well-known index of objective discriminability in perceptual decisions (d’). We found that, once all factors are equated, motion discrimination is superior to motion detection, as measured as perceptual decisions; in turn, motion detection is superior to subjective motion visibility. This finding strengthens our previous suggestion that, under uncertainty conditions, perceptual decisions can be taken before the conscious percept is fully stabilized, and suggests that some simple sensations can be reliably captured by objective “currency” through an open-minded quantitative approach. Our perspective may be regarded as an attempt to “phenomenologize psychophysics”. Regina Gregori GrgicClaudio de’SperatiRosenberg & SellierarticlesensationdecisionperceptionAestheticsBH1-301EthicsBJ1-1725ENFRITPhenomenology and Mind, Iss 4 (2016)
institution	DOAJ
collection	DOAJ
language	EN FR IT
topic	sensation decision perception Aesthetics BH1-301 Ethics BJ1-1725
spellingShingle	sensation decision perception Aesthetics BH1-301 Ethics BJ1-1725 Regina Gregori Grgic Claudio de’Sperati Psychophysics Phenomenologized? Sensation and Decision in Visual Motion Perception
description	Experimental phenomenology and psychophysics are two rather different approaches to the study of perception, and rely on first-person descriptions and third-person measurements of the percept, respectively. Yet, a common ground may be found in the original goal, shared by both approaches, of addressing the conscious dimension of perception. Here we argue that, despite being objective and quantitatively-oriented, psychophysics can, with some cautions, recover certain simple subjective aspects of conscious perception. Building upon the results of a motion perception experiment, we show how to transform the ratings of subjective visibility into a well-known index of objective discriminability in perceptual decisions (d’). We found that, once all factors are equated, motion discrimination is superior to motion detection, as measured as perceptual decisions; in turn, motion detection is superior to subjective motion visibility. This finding strengthens our previous suggestion that, under uncertainty conditions, perceptual decisions can be taken before the conscious percept is fully stabilized, and suggests that some simple sensations can be reliably captured by objective “currency” through an open-minded quantitative approach. Our perspective may be regarded as an attempt to “phenomenologize psychophysics”.
format	article
author	Regina Gregori Grgic Claudio de’Sperati
author_facet	Regina Gregori Grgic Claudio de’Sperati
author_sort	Regina Gregori Grgic
title	Psychophysics Phenomenologized? Sensation and Decision in Visual Motion Perception
title_short	Psychophysics Phenomenologized? Sensation and Decision in Visual Motion Perception
title_full	Psychophysics Phenomenologized? Sensation and Decision in Visual Motion Perception
title_fullStr	Psychophysics Phenomenologized? Sensation and Decision in Visual Motion Perception
title_full_unstemmed	Psychophysics Phenomenologized? Sensation and Decision in Visual Motion Perception
title_sort	psychophysics phenomenologized? sensation and decision in visual motion perception
publisher	Rosenberg & Sellier
publishDate	2016
url	https://doaj.org/article/03ceac945b63431e8db89cc2e438996b
work_keys_str_mv	AT reginagregorigrgic psychophysicsphenomenologizedsensationanddecisioninvisualmotionperception AT claudiodesperati psychophysicsphenomenologizedsensationanddecisioninvisualmotionperception
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Psychophysics Phenomenologized? Sensation and Decision in Visual Motion Perception

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