A critical examination of perceptual and cognitive effects attributed to full-spectrum fluorescent lighting

Veitch, Jennifer A.; McColl, Shelley L

doi:10.1080/00140130010002008

Cited by 25 publications

(29 citation statements)

References 18 publications

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“…It is likely that light can modulate learning, memory, and behavioral responses to learned cues in other paradigms. Although there is discrepancy in the field, several independent research groups have posited that a switch from regular fluorescent lighting, which emits light at only a few wavelengths, to full-spectrum lighting, which emits light across the visual spectrum, can result in improved mood and performance in the workplace and classroom (30). It is within reason, given our present results, that such a switch could have similar effects on learning and memory performance.…”

Section: Discussionmentioning

confidence: 58%

Light enhances learned fear

Warthen¹,

Wiltgen

Provencio³

2011

Proc. Natl. Acad. Sci. U.S.A.

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The ability to learn, remember, and respond to emotional events is a powerful survival strategy. However, dysregulated behavioral and physiological responses to these memories are maladaptive. To fully understand learned fear and the pathologies that arise during response malfunction we must reveal the environmental variables that influence learned fear responses. Light, a ubiquitous environmental feature, modulates cognition and anxiety. We hypothesized that light modulates responses to learned fear. Using tone-cued fear conditioning, we found that light enhances behavioral responses to learned fear in C57BL/6J mice. Mice in light freeze more in response to a conditioned cue than mice in darkness. The absence of significant freezing during a 2-wk habituation period and during intertrial intervals indicated that light specifically modulates freezing to the learned acoustic cue rather than the context of the experimental chamber. Repeating our assay in two photoreceptor mutant models, Pde6b rd1/rd1 and Opn4 −/− mice, revealed that lightdependent enhancement of conditioned fear is driven primarily by the rods and/or cones. By repeating our protocol with an altered lighting regimen, we found that lighting conditions acutely modulate responses when altered between conditioning and testing. This is manifested either as an enhancement of freezing when light is added during testing or as a depression of freezing when light is removed during testing. Acute enhancement, but not depression, requires both rod/cone-and melanopsin-dependent photoreception. Our results demonstrate a modulation by light of behavioral responses to learned fear.L ight is a pervasive feature of the environment and exerts broad effects on behavior and physiology via two parallel pathways (1). The familiar image-forming visual pathway allows discernment of objects in the environment according to physical qualities: their color, form, texture, and motion. The parallel non-image forming (NIF) pathway enables light to exert numerous effects on physiology and behavior independently of image formation, such as pupil constriction, modulation of heart rate, and the synchronization of circadian rhythms and sleepwake cycles to the daily light-dark cycle (2). In addition to the effects of light on basic physiological functions, light also modulates higher-order cognitive processes, including anxiety, mood, and alertness/awakeness (3, 4). The retina, the sole photosensory organ in mammals, projects directly to brain regions involved in emotional responses. Among these are the amygdala, the bed nucleus of the stria terminalis, and the periaqueductal gray (5). Activity in some of these regions is known to be acutely modulated by light in a wavelength-dependent manner (3, 6), whereas the link between photoreception and function in other retinorecipient emotional processing areas remains to be elucidated.Brain sites involved in emotional processing participate in the critical function of learning and remembering emotionally arousing events. This function enables ...

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Section: Discussionmentioning

confidence: 58%

Light enhances learned fear

Warthen¹,

Wiltgen

Provencio³

2011

Proc. Natl. Acad. Sci. U.S.A.

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“…Lighting. There is a large body of evidence in the psychology literature that lighting has an effect on mood and cognition [14,20]. It is hence unsurprising that lighting was found to have an effect on TAs' working environment.…”

Section: Corroborating Evidencementioning

confidence: 99%

A case study of environmental factors influencing teaching assistant job satisfaction

Patitsas

2012

Proceedings of the Ninth Annual International Conference on International Computing Education Research

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Teaching assistants (TAs) play an integral role in teaching computer science undergraduates in North America. We report lessons in lab TA management, based on a case study which identified environmental factors affecting TAs' job satisfaction. These factors were identified through a series of semi-structured interviews about 23 lab sections taught at the University of British Columbia. We corroborated this with observational sampling of eight different TAs. Identified physical factors affecting job satisfaction include the layout and lighting of the lab rooms. Temporal factors include the intensity and length of the lab sessions. Having a positive social environment (in particular, support from team teaching and staff meetings) was also found to improve job satisfaction.

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“…Of course, because color experiences vary from individual to individual, it is not possible to know how another person experiences color [47]. Studies that have attempted to link colors with memory, mood, cognitive abilities, and personality found inconsistent results [48,49,50]. Also, some research findings suggested the opposite that color links to health and doctors can use colors of light to heal ailments [51].…”

Section: Color As An Attention Factormentioning

confidence: 99%

Attention Economy: A New Marketing and Growth Approach for Small and Medium Enterprises

Dehkordi

Yonekura

2018

IJARCSSE

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-As more communication tasks are being run in Small and Medium Enterprises (SMEs), the question of whether the media strategies affect attention-market is increasingly important. This study attempted to explain uncovered features of communication media that has not been well indicated. In this sense, this study focused on the context of developing countries to understand the applicable facets of media in SMEs. The authors claim that success in the business is highly related to the appropriate choice of attention-sensitive media for communication purpose, and a balance between attention and communication goals is recommended.

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A critical examination of perceptual and cognitive effects attributed to full-spectrum fluorescent lighting

Cited by 25 publications

References 18 publications

Light enhances learned fear

Light enhances learned fear

A case study of environmental factors influencing teaching assistant job satisfaction

Attention Economy: A New Marketing and Growth Approach for Small and Medium Enterprises

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