2026 Sarah Laxhmi Chellappa: Neuroscience Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Neuroscience	38	8551	7901	635	587	127	5927

Overview

Sarah Laxhmi Chellappa is affiliated with the University of Southampton in the United Kingdom and has contributed extensively to research in the fields of neuroscience, psychology, and medicine. Their work primarily focuses on sleep and circadian rhythms, addressing aspects related to sleep disorders, circadian misalignment, and the physiological and psychological effects of light sensitivity and eating behaviors on metabolic health.

The main fields of study associated with their research include:

Neuroscience
Psychology
Medicine

Within these fields, more specific subfields of study are prominent in Chellappa's work:

Experimental and Cognitive Psychology
Cognitive Neuroscience
Endocrine and Autonomic Systems
Physiology
Psychiatry and Mental Health

The scientist's research covers several key topics, including:

Sleep and Related Disorders
Circadian Rhythm and Melatonin
Sleep and Wakefulness Research
Dietary Effects on Health
Sleep and Work-Related Fatigue
Autism Spectrum Disorder Research
Attention Deficit Hyperactivity Disorder

Chellappa has published frequently in various scientific journals, with notable venues including:

Sleep Health
SLEEP
Sleep Medicine Reviews
Proceedings of the National Academy of Sciences
Journal of Sleep Research

Some of the recent papers by Sarah Laxhmi Chellappa are:

Sleep and anxiety: From mechanisms to interventions, 2021, Sleep Medicine Reviews
Individual differences in light sensitivity affect sleep and circadian rhythms, 2020, SLEEP
Late isocaloric eating increases hunger, decreases energy expenditure, and modifies metabolic pathways in adults with overweight and obesity, 2022, Cell Metabolism
Daytime eating prevents internal circadian misalignment and glucose intolerance in night work, 2021, Science Advances
Circadian misalignment increases mood vulnerability in simulated shift work, 2020, Scientific Reports

The scientist has collaborated with several frequent co-authors, including:

Christian Cajochen
Frank A. J. L. Scheer
Nina Vujović
Jingyi Qian
Mirjam Münch

Best Publications

Non-visual effects of light on melatonin, alertness and cognitive performance: can blue-enriched light keep us alert?

Sarah Laxhmi Chellappa;Roland Steiner;Peter Blattner;Peter Oelhafen

665
Citations
Sleep and anxiety: From mechanisms to interventions.

Unknown

506
Citations
Acute exposure to evening blue-enriched light impacts on human sleep.

Sarah Laxhmi Chellappa;Roland Steiner;Peter Oelhafen;Dieter Lang

325
Citations
Impact of Circadian Disruption on Cardiovascular Function and Disease

Sarah L. Chellappa;Sarah L. Chellappa;Nina Vujovic;Nina Vujovic;Jonathan S. Williams;Frank A.J.L. Scheer;Frank A.J.L. Scheer

313
Citations
Circadian regulation of human cortical excitability

Julien Q M Ly;Giulia Gaggioni;Sarah L. Chellappa;Soterios Papachilleos

235
Citations
Local modulation of human brain responses by circadian rhythmicity and sleep debt

Vincenzo Muto;Mathieu Jaspar;Christelle Meyer;Caroline Kussé

220
Citations
Effects of Artificial Dawn and Morning Blue Light on Daytime Cognitive Performance, Well-being, Cortisol and Melatonin Levels

Virginie Gabel;Micheline Maire;Carolin F. Reichert;Sarah Laxhmi Chellappa

195
Citations
Can light make us bright? Effects of light on cognition and sleep

Sarah Laxhmi Chellappa;Sarah Laxhmi Chellappa;Marijke C. M. Gordijn;Christian Cajochen

182
Citations
Seasonality in human cognitive brain responses

Christelle Meyer;Vincenzo Muto;Mathieu Jaspar;Caroline Kussé

163
Citations
Late isocaloric eating increases hunger, decreases energy expenditure, and modifies metabolic pathways in adults with overweight and obesity.

Unknown

154
Citations
Individual differences in light sensitivity affect sleep and circadian rhythms.

Sarah L Chellappa;Sarah L Chellappa

140
Citations
Sleep disorders and suicidal ideation in patients with depressive disorder

Sarah Laxhmi Chellappa;John Fontenele Araújo

134
Citations
Human Melatonin and Alerting Response to Blue-Enriched Light Depend on a Polymorphism in the Clock Gene PER3

Sarah Laxhmi Chellappa;Antoine U. Viola;Christina Schmidt;Valerie Bachmann

122
Citations
Excessive daytime sleepiness in patients with depressive disorder

Sarah Laxhmi Chellappa;John Fontenele Araújo

117
Citations
Sex differences in light sensitivity impact on brightness perception, vigilant attention and sleep in humans

Sarah L. Chellappa;Roland Steiner;Peter Oelhafen;Christian Cajochen

117
Citations
Daily circadian misalignment impairs human cognitive performance task-dependently

Sarah L. Chellappa;Sarah L. Chellappa;Christopher J. Morris;Christopher J. Morris;Frank A. J. L. Scheer;Frank A. J. L. Scheer

114
Citations
Photic memory for executive brain responses

Sarah Laxhmi Chellappa;Julien Q. M. Ly;Christelle Meyer;Evelyne Balteau

111
Citations
HUMAN SLEEP AND COGNITION, PT II: CLINICAL AND APPLIED RESEARCH

Sarah Laxhmi Chellappa;Marijke Gordijn;Christian Cajochen

111
Citations
Light Modulation of Human Clocks, Wake, and Sleep.

Abhishek S Prayag;Mirjam Münch;Daniel Aeschbach;Sarah L Chellappa

108
Citations
Effects of circadian misalignment on cognition in chronic shift workers.

Sarah L. Chellappa;Sarah L. Chellappa;Christopher J. Morris;Christopher J. Morris;Frank A. J. L. Scheer;Frank A. J. L. Scheer

102
Citations
Cortical activation patterns herald successful dream recall after NREM and REM sleep

Sarah Laxhmi Chellappa;Sylvia Frey;Vera Knoblauch;Christian Cajochen

92
Citations
What keeps us awake? The role of clocks and hourglasses, light, and melatonin.

Christian Cajochen;Sarah Laxhmi Chellappa;Christina Schmidt

87
Citations
Chronobiology, excessive daytime sleepiness and depression: Is there a link?

Sarah Laxhmi Chellappa;Carmen Schröder;Christian Cajochen

86
Citations

Frequent Co-Authors

Gilles Vandewalle University of Liège

Christophe Phillips University of Liège

Christian Cajochen University of Basel

Pierre Maquet University of Liège

Simon Archer University of Surrey

Derk-Jan Dijk University of Surrey

Mario Rosanova University of Milan

André Luxen University of Liège

Fabienne Collette University of Liège

Marcello Massimini University of Milan

External Links

Personal website of Sarah Laxhmi Chellappa

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