How Does Light Regulate Mood and Behavioral State?

Milosavljevic, Nina

doi:10.3390/clockssleep1030027

Cited by 14 publications

(10 citation statements)

References 94 publications

(118 reference statements)

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“…Non-visual effects of light comprise many physiological and neuropsychological measures in humans ranging from circadian gene expression to subjective perception of alertness and mood (for reviews, see 7,8 ). Another photoreceptor system besides rods and cones forms a key element in transmitting the non-visual action of light to the brain, namely the intrinsically photosensitive retinal ganglion cells (ipRGCs) containing the photopigment melanopsin.…”

Section: Introductionmentioning

confidence: 99%

Influence of evening light exposure on polysomnographically assessed night-time sleep: A systematic review with meta-analysis

Cajochen

Stefani

Schöllhorn

et al. 2022

Lighting Research & Technology

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Evening exposure to electric light can acutely suppress melatonin levels and adversely affect subsequent sleep. We conducted a systematic review with meta-analysis investigating the influence of evening illuminance levels on polysomnographically (PSG)-assessed sleep. We also explored how melanopsin (expressed in melanopic equivalent daylight illuminance (EDI) affects human sleep features. We included polysomnographic laboratory sleep studies with healthy humans for effects of illuminance and exposure duration, for pre-sleep exposures between 6:00 p.m. to 1:00 a.m. From 440 identified articles, 114 met eligibility criteria for screening, and 21 also reported type of light source/spectral characteristics, with 12 identified as eligible for review. Meta-analysis showed evening light affects sleep latency, sleep efficiency and slow wave sleep, with overall effect sizes (95% confidence interval) of 0.69 (−0.50; 1.88), 0.34 (−0.13; 0.82) and −0.61 (−1.85; 0.62), respectively. Estimated melanopic EDI in the range of 100–1000 lx yielded clear dose–response relationships for sleep latency and sleep efficiency, but not for slow wave sleep. Whilst illuminance and duration indicated no apparent effects for a single evening light exposure on PSG-assessed sleep latency, sleep efficiency and slow wave sleep, we observed evidence for a relationship between light exposure and sleep effects based on melanopic EDI. Hence, melanopic EDI may provide a robust predictor of non-visual responses on human sleep.

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Section: Introductionmentioning

confidence: 99%

Influence of evening light exposure on polysomnographically assessed night-time sleep: A systematic review with meta-analysis

Cajochen

Stefani

Schöllhorn

et al. 2022

Lighting Research & Technology

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“…The results showed that the bright blue lighting was the most arousing, and the green lighting with the low intensity was the least arousing. Milosavljevic 43 explored the light effects on mood and behaviour from a more scientific and medical perspective. Current understanding of the mechanisms and paths in which light information modulates behavioural state and mood are reviewed in this study.…”

Section: Effects Of Lightingmentioning

confidence: 99%

Effects of coloured lighting on pleasure and arousal in relation to cultural differences

Lee

2021

Lighting Research & Technology

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This study examined the effects of lighting colour on emotional states and the effects of ethnicity on the impact of lighting colours on emotional states, based on the Mehrabian and Russell’s emotional state model measuring pleasure, arousal and dominance. It was hypothesised that there are significant differences in pleasure and arousal among six lighting colours: red, green, blue, yellow, orange and purple and that different ethnicities (i.e. Asian and Caucasian) can influence the effects of the six lighting colours on pleasure and arousal. To test the hypotheses, an experiment was conducted in a controlled lab using a colour-changing LED lighting fixture with 82 participants. The results revealed that there were significant differences in pleasure and arousal among the six lighting colours. Ethnicity had significant effects on the impact of lighting colour on pleasure but not on arousal. Blue was the most pleasant lighting colour and showed significantly higher pleasure than red and purple. Red was the least pleasant lighting colour and showed significantly lower pleasure than all other lighting colours. Asians found red and purple lighting significantly less pleasant than all other colours and tended to feel more unpleasant when exposed to red, orange and purple lighting than Caucasians.

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“…36 The improvement of the cognitive performance of the human brain under light exposure is reported in phototherapy of human mood disorders, including depressive discords and bipolar depression. 37,38 The development of the neuromorphic device helped us to investigate the effect of human emotions and mood swings on cognitive activity.…”

Section: Introductionmentioning

confidence: 99%

“…Different neuroscience-related research has shown that human emotions (happy, mild, and sad) influence the cognitive process, including the attention, learning, and memory nature of the human brain. − These cognitive activities are controlled by basic emotions, which have a direct impact on learning from environmental events . The improvement of the cognitive performance of the human brain under light exposure is reported in phototherapy of human mood disorders, including depressive discords and bipolar depression. , The development of the neuromorphic device helped us to investigate the effect of human emotions and mood swings on cognitive activity.…”

Section: Introductionmentioning

confidence: 99%

Visible Light-Stimulated Artificial Synapse Based on an Organic Field-Effect Transistor for Imitating Human Emotions and Mood Swings

Mandal,

Sonar,

Singh

2024

ACS Appl. Electron. Mater.

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The development of a synaptic transistor stimulated by visible light has drawn significant attention in recent years due to its high operating speed, low energy consumption, wide bandwidth, high transmission rate, and relatively low noise. These properties make them potential devices for understanding the behavior of the human brain and artificial intelligence-related applications. In this work, we report a low-voltage operating photosynaptic transistor based on an organic semiconductor poly(2,5bis(3-alkylthiophen-2-yl) thieno[3,2-b] thiophene) [PBTTT-C14]. Basic neurobiological synapse-like behaviors such as excitatory post-synaptic current (EPSC), pair pulse facilitation (PPF), short-term plasticity (STP), long-term plasticity (LTP), and learningforgetting-memorizing nature like the human brain are successfully explained. Photoresponse parameters like photoresponsivity (R), detectivity (D*), and photo and dark current ratio are estimated and interpreted. These devices successfully demonstrated the conversion from STP to LTP with the variation of initial photoexcitations. We attribute the human brain-like behavior of these photosynaptic devices to the interfacial charge-trapping effect at the interface of the semiconducting channel and dielectric layer. Further, we investigated the impact of interfacial traps on the photosynaptic behavior using photocurrent measurements at different light intensities. Moreover, these devices also show a human emotion-tunable and mood swing-dependent learning and memory behavior. Additionally, we have successfully demonstrated the utilization of these devices for "OR" logic gate operation. This study shows the photosynaptic behavior using the most simple OFET architecture, which can be tuned by improvising trap density at semiconductor/dielectric interfaces using a self-assembled monolayer. The results presented in this paper support the potential of such devices as neural units for constructing low-power-operating artificial neural networks.

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How Does Light Regulate Mood and Behavioral State?

Cited by 14 publications

References 94 publications

Influence of evening light exposure on polysomnographically assessed night-time sleep: A systematic review with meta-analysis

Influence of evening light exposure on polysomnographically assessed night-time sleep: A systematic review with meta-analysis

Effects of coloured lighting on pleasure and arousal in relation to cultural differences

Visible Light-Stimulated Artificial Synapse Based on an Organic Field-Effect Transistor for Imitating Human Emotions and Mood Swings

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