Infradian Rhythms Flashcards
1
Q
What are Infradian Rhythms
A
longer than 24 hour cycles of biological rhythms
2
Q
example of Infradian Rhythms
A
menstrual cycle
seasonal effective disorder (SAD)
3
Q
what is SAD
A
- pineal gland secretes melatonin - lack of light during winter =
- more melatonin secreted =
- more melatonin = depression
4
Q
Russel et al (1980) Odour Donor
A
- rubbed sweat from a collection of women
- rubbed on upper lip of other women
- synched cycles - influenced by zeit
(holistic rather than reductive approach needed)
5
Q
Reinberg (1967)
A
- women 3 months in a cave
- small lamp for light
- cycle shortened from 28 –> 25.7
- improved validity
6
Q
Evolutionary example
A
- cycle sync = advantage
- collective child rearing
7
Q
Penton-volk et al (1999)
A
- finding a partner attractive = cycle
- most fertile = masc face
- least fertile = fem face
8
Q
Terman (1988)
A
SAD - most common in North - less light
- New Hampshire (10% SAD)
- South Florida (2% SAD)
