Summary
This paper hypothesizes that suboptimal ipRGC functioning and circadian system dysregulation are core features of ADHD, not merely comorbidities, with 69% of adults with ADHD reporting light oversensitivity. This reframing has practical implications for lighting design in ADHD-friendly environments, suggesting that controlling light exposure timing and intensity could be a therapeutic intervention.
Key Findings
- 69% of adults with ADHD reported oversensitivity to bright light in a preliminary web survey
- Circadian phase delay is proposed as a core feature of ADHD, not just a comorbidity
- ipRGC dysfunction is hypothesized to contribute to abnormal circadian entrainment and light sensitivity in ADHD
- Authors propose redefining ADHD to include circadian system dysfunction as a primary etiological factor
Categories
Sleep & Circadian Health: Proposes that circadian system dysfunction, including delayed circadian phase and abnormal light sensitivity, is central to ADHD etiology.
Student Learning: Directly addresses ADHD pathophysiology with implications for how circadian disruption affects attention and cognitive functioning in affected individuals.
The Science of Light: Implicates ipRGC dysfunction in ADHD, suggesting abnormal phototransduction and light sensitivity as a biological mechanism.
Author(s)
D Bijlenga, MA Vollebregt, JJS Kooij, M Arns
Publication Year
2019
Number of Citations
110
Related Publications
Sleep & Circadian Health
- Phototransduction by retinal ganglion cells that set the circadian clock
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- The two‐process model of sleep regulation: a reappraisal
- Melanopsin is required for non-image-forming photic responses in blind mice
- Strange vision: ganglion cells as circadian photoreceptors
Student Learning
- The impact of light from computer monitors on melatonin levels in college students
- Decreased sleep quality in high myopia children
- Early electronic screen exposure and autistic-like symptoms
- ADHD 24/7: Circadian clock genes, chronotherapy and sleep/wake cycle insufficiencies in ADHD
- Towards a sustainable indoor lighting design: Effects of artificial light on the emotional state of adolescents in the classroom
The Science of Light
- Phototransduction by retinal ganglion cells that set the circadian clock
- Color appearance models
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- Diminished pupillary light reflex at high irradiances in melanopsin-knockout mice
- Melanopsin is required for non-image-forming photic responses in blind mice