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Peirson

Stuart Peirson

BSc, PhD


Professor of Circadian Neuroscience

Circadian Neuroscience

Research Summary

My research focuses on how light regulates physiology and behaviour, with a particular interest in how our modern artificial light environment may disrupt these processes. The retina contains photoreceptors that mediate the tasks of vision as well the regulation of circadian rhythms, sleep and alertness. The central aim of my work is to understand how light information is transmitted from photoreceptor to brain to drive these responses. Research in my lab depends upon molecular biology and genomics, as well as optogenetics and chemogenetics. We also study behavioural responses including circadian rhythms, sleep and cognitive function. Photobiology, statistics and bioinformatics critically underpin our work.

Sources of Funding

Biography

I am Professor of Circadian Neuroscience and Group Leader in the fundamental neuroscience theme of the Sleep and Circadian Neuroscience Institution (SCNi). After completing my PhD in Neuroscience at the Institute of Ophthalmology UCL I moved to Imperial College to work as a postdoc. During this time I also acted as technical supervisor for the quantitative real-time PCR (qPCR) facility at Charing Cross Hospital. During my subsequent work, I contributed to the identification of the melanopsin pRGC system in humans as well as the characterisation of melanopsin signalling pathways. I was appointed as a Lecturer at Imperial College in 2005 before moving to the University of Oxford in 2006. My work has continued to focus upon characterising the signalling pathways mediating the effects of light on physiology and behaviour, with the aim of identifying novel targets for the regulation of circadian rhythms and sleep. 

Key publications

Dim light in the evening causes coordinated realignment of circadian rhythms, sleep, and short-term memory.

Journal article

Tam SKE. et al, (2021), Proc Natl Acad Sci U S A, 118

Meta-analysis of transcriptomic datasets identifies genes enriched in the mammalian circadian pacemaker.

Journal article

Brown LA. et al, (2017), Nucleic acids research, 45, 9860 - 9873

Melanopsin Regulates Both Sleep-Promoting and Arousal-Promoting Responses to Light

Journal article

Hankins MW. et al, (2016), PLoS Biology

Isoforms of Melanopsin Mediate Different Behavioral Responses to Light.

Journal article

Jagannath A. et al, (2015), Curr Biol, 25, 2430 - 2434

The CRTC1-SIK1 pathway regulates entrainment of the circadian clock.

Journal article

Jagannath A. et al, (2013), Cell, 154, 1100 - 1111

Recent publications

Molecular correlates of sleep deprivation in the mouse brain identified by meta-analysis of microarray data.

Journal article

Abdalla OHMH. et al, (2026), Neurobiol Sleep Circadian Rhythms, 21

Hypotheses in light detection by vertebrate ancient opsin in the bird brain.

Journal article

Stevenson TJ. et al, (2025), J Neuroendocrinol, 37

Evaluation of the Digital Ventilated Cage® system for circadian phenotyping.

Journal article

Tir S. et al, (2025), Sci Rep, 15