PSY397H1 Chapter Notes -Menopause, Chronotype, Cortisol
Document Summary
Reading q notes: a marker for the end of adolescence. Chronotype: when endogenous clock synchronized with 24 h day. (late: owls, early: larks) Around 20 yrs, sleep timing changes: one way to mark change in adolescence. Munich chronotype questionnaire (mctq): questions people on sleep habits on both work and free days. Chronotype is assigned based on midpoint on free days (msf). Children are early chronotypes, during development they progress later until they reach a maximum around 20 years, and chronotype gets earlier from then. Women"s lateness peaks are earlier than that of men, while men also delay until a later age and tend to be later chronotypes for most of adulthood. Around 50 (for women, menopausal age) the sex difference disappears. At over 65 years, data points are scattered. Hormonal aspects may be involved: (concentration and release vary with age) Sleep structure follows hormones (ie growth hormone and cortisol in teens)
