PSYC 388 Lecture Notes - Lecture 2: Zebrafish, Pupa, Waggle Dance

• School: Simon Fraser University
• Department: Psychology
• Course: PSYC 388
• Professor: Ralph Mistlberger

Document Summary

Sub type of temporal isolation study: does(cid:374)"t (cid:373)atte(cid:396) if su(cid:271)je(cid:272)t k(cid:374)o(cid:449)s the ti(cid:373)e. Theoretical argument that clocks (cid:272)a(cid:374)"t e(cid:454)ist (cid:449)as (cid:272)ou(cid:374)te(cid:396)ed (cid:271)(cid:455) e(cid:373)pi(cid:396)i(cid:272)al e(cid:448)ide(cid:374)(cid:272)e. Conventional conclusion: rhythms must be passive responses to unknown factor x. Paradigm shift: circadian rhythms do not vary with temperature because its temperature compensated (independent) Circadian rhythms are innate: clock is endogenous, and innate - organism has genetic ability to develop a circadian clock independently from experience. 1 gene is indispensable all the others can be modified, rhythms will change but wont disappear. Arhythmicity occurs if the integral gene is knocked out: periodicity can change with age, hormonal state. Circadian rhythms dictate behaviors, variability from hour to hour. Variability is controlled by rhythms and corresponding clocks. Halberg promoted chronobiology by emphasizing the significance of time. Rhythms and clocks must be accounted for in experiments as they can confound.