Afraid of the dark: Light acutely suppresses activity in the human amygdala
Light improves mood. The amygdala plays a critical role in regulating emotion, including fear-related responses. In rodents the amygdala receives direct light input from the retina, and light may play a role in fear-related learning. A direct effect of light on the amygdala represents a plausible me...
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Veröffentlicht in: | PloS one 2021-06, Vol.16 (6), p.e0252350-e0252350 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Light improves mood. The amygdala plays a critical role in regulating emotion, including fear-related responses. In rodents the amygdala receives direct light input from the retina, and light may play a role in fear-related learning. A direct effect of light on the amygdala represents a plausible mechanism of action for light's mood-elevating effects in humans. However, the effect of light on activity in the amygdala in humans is not well understood. We examined the effect of passive dim-to-moderate white light exposure on activation of the amygdala in healthy young adults using the BOLD fMRI response (3T Siemens scanner; n = 23). Participants were exposed to alternating 30s blocks of light (10 lux or 100 lux) and dark ( |
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ISSN: | 1932-6203 1932-6203 |
DOI: | 10.1371/journal.pone.0252350 |