The circadian cycle, an intrinsic biological rhythm with a period of approximately 24 hours, plays a fundamental role in synchronizing physiological and behavioral functions with the external environment. Scientific literature has demonstrated the significant influence of this cycle on human cognition, impacting areas such as attention, memory, learning and decision-making.
Disruption or misalignment of the circadian rhythm, often observed in night shift workers or individuals with sleep disorders, can lead to significant cognitive impairment. Studies of airline pilots, for example, have shown that sleep deprivation and circadian rhythm disruption are associated with deficits in attention, memory, and executive performance, compromising safety and efficiency at work [1].
On the other hand, a healthy circadian rhythm, maintained through adequate and regular sleep, promotes an environment conducive to cognitive development. During sleep, memory consolidation, restoration of brain functions and production of hormones essential for physical and mental health occur [2].
In short, the circadian rhythm and human cognition are intrinsically linked. Understanding this relationship is crucial for promoting healthy lifestyle habits, optimizing cognitive performance, and preventing diseases related to sleep and circadian rhythms.
References :
[1] DE MELO, Marília Fernandes Soares; NETO, Annibal Muniz Silvany. Morbidity profile, ergonomic and psychosocial aspects, fatigue and circadian rhythm disturbance of commercial aviation pilots: a narrative review. Bahian Journal of Public Health, v. 36, n. 3, p. 683-683, 2012.
[2] SILVA, Alessandra Carolina; SARDINHA, Luís Sérgio; DE AQUINO LEMOS, Valdir. Relationships between sleep deprivation, circadian rhythm and cognitive functions in shift workers. Interdisciplinary Dialogues, v. 8, n. 10, p. 145-153, 2019.
Dr. Fabiano de Abreu Agrela Rodrigues MRSB holds a post-PhD in Neuroscience and is an elected member of Sigma Xi – The Scientific Research Honor Society (more than 200 members of Sigma Xi have received the Nobel Prize), as well as being a member of the Society for Neuroscience in the United States, the Royal Society of Biology and The Royal Society of Medicine in the United Kingdom, the European Society of Human Genetics in Vienna, Austria, and the APA – American Philosophical Association in the United States. He holds a Master’s degree in Psychology and a Bachelor’s degree in History and Biology. He is also a Technologist in Anthropology and Philosophy, with several national and international degrees in Neuroscience and Neuropsychology. Dr. Fabiano is a member of prestigious high IQ societies, including Mensa International, Intertel, ISPE High IQ Society, Triple Nine Society, ISI-Society, and HELLIQ Society High IQ. He is the author of more than 300 scientific studies and 30 books. He is currently a visiting professor at PUCRS in Brazil, UNIFRANZ in Bolivia and Santander in Mexico. He also serves as Director of CPAH – Centro de Pesquisa e Análises Heráclito and is the creator of the GIP project, which estimates IQ through the analysis of genetic intelligence. Dr. Fabiano is also a registered journalist, having his name included in the book of records for achieving four records, one of which is for being the greatest creator of characters in the history of the press.