WAVELENGTH DEPENDENCE OF LIGHT-INDUCED PHASE-SHIFTS AND PERIOD CHANGES IN HAMSTERS

被引:21
作者
BOULOS, Z
机构
[1] Institute for Circadian Physiology, One Alewife Center, Cambridge
关键词
CIRCADIAN RHYTHMS; LIGHT; WAVELENGTH; PHASE SHIFT; PERIOD CHANGE; PHOTORECEPTORS; SYRIAN HAMSTER;
D O I
10.1016/0031-9384(95)00015-B
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
The wavelength dependence of three different circadian responses to light was compared in Syrian hamsters: phase advances and phase delays induced by 15-min light pulses at CT18 (circadian time 18) and CT13, respectively, and changes in free-running period under different levels of constant illumination (LL) intensity. Fluorescent lamps with transmission maxima at 436, 514, and 658 nm were used for delivering blue, green, and red light, respectively. White fluorescent light was also used in the LL portion of the study. The magnitude of each circadian response was plotted as a function of light intensity expressed in photons cm(-2) s(-1), and intensity-response relationships for the different wavelengths were quantified by fitting the data with a 4-parameter sigmoidal function using a least-squares curve-fitting routine. For each response type, the curves for the different wavelengths were identical but displaced along the horizontal axis [i.e., the functions differed only in the intensity (sigma) required for producing a half-maximal response]. The values of sigma for green and blue light were similar, while that for red light was several times greater. These results indicate that a single class of photoreceptors with peak sensitivity in the blue-green region mediates light-induced phase advances, phase delays, and changes in the period of the hamster circadian pacemaker.
引用
收藏
页码:1025 / 1033
页数:9
相关论文
共 19 条
  • [1] RESPONSE OF HAMSTER CIRCADIAN SYSTEM TO TRANSITIONS BETWEEN LIGHT AND DARKNESS
    ALBERS, HE
    [J]. AMERICAN JOURNAL OF PHYSIOLOGY, 1986, 250 (04): : R708 - R711
  • [2] ARGAMASO SM, 1993, INVEST OPHTH VIS SCI, V34, P1077
  • [3] CIRCADIAN-RHYTHMS OF LOCOMOTOR ACTIVITY IN GOLDEN-HAMSTER (MESOCRICETUS-AURATUS) MEASURED WITH 2 DIFFERENT TECHNIQUES
    ASCHOFF, J
    FIGALA, J
    POPPEL, E
    [J]. JOURNAL OF COMPARATIVE AND PHYSIOLOGICAL PSYCHOLOGY, 1973, 85 (01): : 20 - 28
  • [4] THE INFLUENCE OF DIFFERENT LIGHT SPECTRA ON THE SUPPRESSION OF PINEAL MELATONIN CONTENT IN THE SYRIAN-HAMSTER
    BRAINARD, GC
    RICHARDSON, BA
    KING, TS
    REITER, RJ
    [J]. BRAIN RESEARCH, 1984, 294 (02) : 333 - 339
  • [5] FUNCTIONAL-ANALYSIS OF CIRCADIAN PACEMAKERS IN NOCTURNAL RODENTS .2. VARIABILITY OF PHASE RESPONSE CURVES
    DAAN, S
    PITTENDRIGH, CS
    [J]. JOURNAL OF COMPARATIVE PHYSIOLOGY, 1976, 106 (03): : 253 - 266
  • [6] TONIC AND PHASIC EFFECTS OF LIGHT IN ENTRAINMENT OF CIRCADIAN-RHYTHMS
    DAAN, S
    [J]. ANNALS OF THE NEW YORK ACADEMY OF SCIENCES, 1977, 290 (APR11) : 51 - 59
  • [7] DAAN S, 1976, J COMP PHYSIOL, V106, P267, DOI 10.1007/BF01417858
  • [8] DECOURSEY PJ, 1988, SOC RES BIOL RHYTHMS, V1, P75
  • [9] SIMULTANEOUS ANALYSIS OF FAMILIES OF SIGMOIDAL CURVES - APPLICATION TO BIOASSAY, RADIOLIGAND ASSAY, AND PHYSIOLOGICAL DOSE-RESPONSE CURVES
    DELEAN, A
    MUNSON, PJ
    RODBARD, D
    [J]. AMERICAN JOURNAL OF PHYSIOLOGY, 1978, 235 (02): : E97 - E102
  • [10] CIRCADIAN PHOTORECEPTION IN THE RETINALLY DEGENERATE MOUSE (RD/RD)
    FOSTER, RG
    PROVENCIO, I
    HUDSON, D
    FISKE, S
    DEGRIP, W
    MENAKER, M
    [J]. JOURNAL OF COMPARATIVE PHYSIOLOGY A-SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY, 1991, 169 (01) : 39 - 50