PSY 102 Lecture Notes - Lecture 6: Social Influence, Morphine, Motor Coordination

• School: Ryerson University
• Department: Psychology
• Course: PSY 102
• Professor: Meagan Mackenzie

Document Summary

Responsible for 3 senses not covered in last lecture* i. dreams. Circadian rhythms: occur on a 24-hour cycle and include sleep and wakefulness. Termed our (cid:862)(cid:271)iologi(cid:272)al (cid:272)lo(cid:272)k(cid:863); it (cid:272)a(cid:374) (cid:271)e altered (cid:271)y artifi(cid:272)ial light. Light triggers the suprachiasmatic nucleus to decrease (morning) melatonin form the pineal gland and increase (evening) at night. Light striking the retina signals the scm (part of the hypothalamus) Scn transmits signals to the pineal gland (alters production of melatonin) Tells us if (cid:449)e do(cid:374)"t ha(cid:448)e (cid:272)ues that tells us (cid:449)he(cid:374) the(cid:374) our (cid:272)lo(cid:272)k (cid:449)ould (cid:271)e (cid:272)loser to 25 hours. 15% of blind people have no light perception- they often have major complaints about their circadian rhythms. Shift work rotating shift workers adapt better to progressively late shifts than to earlier ones. Jet lag spend the first day outdoors, bright light in the morning facilitates waking. Sleep stage research measuring sleep: about every 90 minutes, we pass through a cycle of five distinct sleep stages.