What Evidence Is There That Circadian Rhythms Are Controlled by a Biological

question 101

Essay

What evidence is there that circadian rhythms are controlled by a biological clock? What brain structure and hormone are involved?

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Definitions:

Hallucinations

Perceptions in a conscious and awake state in the absence of external stimuli which have qualities of real perception.

Postpartum Psychosis

A severe mental health condition that can affect new mothers, characterized by extreme mood swings, confusion, hallucinations, and delusions, primarily occurring shortly after childbirth.

Psychological Disorders

Mental disorders characterized by patterns of behavior or thought that are disruptive, distressing, and deviate from social norms, affecting daily functioning.

Substance Abuse

The harmful or hazardous use of psychoactive substances, including alcohol and illicit drugs.