| Paper Abstract and Keywords |
| Presentation |
2026-02-17 13:30
Relationship between the contribution of the melanopsin signal to brightness and the stimulus hue
Nagi Kinoshita, Takehiro Nagai (Science Tokyo), Osamu Masuda (NUHW) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
This study examined how melanopsin-driven signals in intrinsically photosensitive retinal ganglion cells (ipRGCs) contribute to the perceived brightness of chromatic stimuli and how this contribution depends on hue. In the experiment, two stimuli were generated for each of the eight hues using the silent substitution method, where the melanopsin stimulation was manipulated while keeping cone stimulation and luminance constant. Perceived brightness was measured through color and brightness matching. The results confirmed that perceived brightness significantly increased with higher melanopsin stimulation across all hues. Furthermore, the magnitude of this contribution varied by hue and exhibited a negative correlation trend with the S-(L+M) cone-opponent channel, though the correlation was not statistically significant. There is the possibility that melanopsin signals may be related to an S-cone–opponent channel in the formation of brightness perception. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Brightness perception / cone signal / psychophysics / melanopsin / / / / |
| Reference Info. |
ITE Tech. Rep., vol. 50, no. 4, HI2026-7, pp. 32-37, Feb. 2026. |
| Paper # |
HI2026-7 |
| Date of Issue |
2026-02-10 (HI) |
| ISSN |
Online edition: ISSN 2424-1970 |
| Download PDF |
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| Conference Information |
| Committee |
IEICE-HIP HI VRPSY ASJ-H |
| Conference Date |
2026-02-17 - 2026-02-18 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
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| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
HI |
| Conference Code |
2026-02-HIP-HI-VRPSY-H |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Relationship between the contribution of the melanopsin signal to brightness and the stimulus hue |
| Sub Title (in English) |
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| Keyword(1) |
Brightness perception |
| Keyword(2) |
cone signal |
| Keyword(3) |
psychophysics |
| Keyword(4) |
melanopsin |
| Keyword(5) |
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| Keyword(6) |
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| 1st Author's Name |
Nagi Kinoshita |
| 1st Author's Affiliation |
Institute of Science Tokyo (Science Tokyo) |
| 2nd Author's Name |
Takehiro Nagai |
| 2nd Author's Affiliation |
Institute of Science Tokyo (Science Tokyo) |
| 3rd Author's Name |
Osamu Masuda |
| 3rd Author's Affiliation |
Niigata university of health and welfare (NUHW) |
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| Speaker |
Author-1 |
| Date Time |
2026-02-17 13:30:00 |
| Presentation Time |
20 minutes |
| Registration for |
HI |
| Paper # |
HI2026-7 |
| Volume (vol) |
vol.50 |
| Number (no) |
no.4 |
| Page |
pp.32-37 |
| #Pages |
6 |
| Date of Issue |
2026-02-10 (HI) |