Invisible light inside the natural blind spot alters brightness at a remote location

Abstract The natural blind spot in the visual field has been known as a large oval region that cannot receive any optical input because it corresponds to the retinal optic disk containing no rod/cone-photoreceptors. Recently, stimulation inside the blind spot was found to enhance, but not trigger, t...

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Autores principales:	Marina Saito, Kentaro Miyamoto, Yusuke Uchiyama, Ikuya Murakami
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/eda8208b380e42c0b15f4946a3c4f7f5
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spelling	oai:doaj.org-article:eda8208b380e42c0b15f4946a3c4f7f52021-12-02T15:08:12ZInvisible light inside the natural blind spot alters brightness at a remote location10.1038/s41598-018-25920-92045-2322https://doaj.org/article/eda8208b380e42c0b15f4946a3c4f7f52018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25920-9https://doaj.org/toc/2045-2322Abstract The natural blind spot in the visual field has been known as a large oval region that cannot receive any optical input because it corresponds to the retinal optic disk containing no rod/cone-photoreceptors. Recently, stimulation inside the blind spot was found to enhance, but not trigger, the pupillary light reflex. However, it is unknown whether blind-spot stimulation also affects visual perception. We addressed this question using psychophysical brightness-matching experiments. We found that a test stimulus outside the blind spot was judged as darker when it was accompanied by a consciously unexperienced blue oval inside the blind spot; moreover, the pupillary light reflex was enhanced. These findings suggested that a photo-sensitive mechanism inside the optic disk, presumably involving the photopigment melanopsin, contributes to our image-forming vision and provides a ‘reference’ for calibrating the perceived brightness of visual objects.Marina SaitoKentaro MiyamotoYusuke UchiyamaIkuya MurakamiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marina Saito Kentaro Miyamoto Yusuke Uchiyama Ikuya Murakami Invisible light inside the natural blind spot alters brightness at a remote location
description	Abstract The natural blind spot in the visual field has been known as a large oval region that cannot receive any optical input because it corresponds to the retinal optic disk containing no rod/cone-photoreceptors. Recently, stimulation inside the blind spot was found to enhance, but not trigger, the pupillary light reflex. However, it is unknown whether blind-spot stimulation also affects visual perception. We addressed this question using psychophysical brightness-matching experiments. We found that a test stimulus outside the blind spot was judged as darker when it was accompanied by a consciously unexperienced blue oval inside the blind spot; moreover, the pupillary light reflex was enhanced. These findings suggested that a photo-sensitive mechanism inside the optic disk, presumably involving the photopigment melanopsin, contributes to our image-forming vision and provides a ‘reference’ for calibrating the perceived brightness of visual objects.
format	article
author	Marina Saito Kentaro Miyamoto Yusuke Uchiyama Ikuya Murakami
author_facet	Marina Saito Kentaro Miyamoto Yusuke Uchiyama Ikuya Murakami
author_sort	Marina Saito
title	Invisible light inside the natural blind spot alters brightness at a remote location
title_short	Invisible light inside the natural blind spot alters brightness at a remote location
title_full	Invisible light inside the natural blind spot alters brightness at a remote location
title_fullStr	Invisible light inside the natural blind spot alters brightness at a remote location
title_full_unstemmed	Invisible light inside the natural blind spot alters brightness at a remote location
title_sort	invisible light inside the natural blind spot alters brightness at a remote location
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/eda8208b380e42c0b15f4946a3c4f7f5
work_keys_str_mv	AT marinasaito invisiblelightinsidethenaturalblindspotaltersbrightnessataremotelocation AT kentaromiyamoto invisiblelightinsidethenaturalblindspotaltersbrightnessataremotelocation AT yusukeuchiyama invisiblelightinsidethenaturalblindspotaltersbrightnessataremotelocation AT ikuyamurakami invisiblelightinsidethenaturalblindspotaltersbrightnessataremotelocation
_version_	1718388289378975744

Invisible light inside the natural blind spot alters brightness at a remote location

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