Entrainment of the circadian system of the house sparrow

A population of oscillators in pinealectomized birds

Joseph S. Takahashi, Michael Menaker

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Removal of the pineal gland modifies the entrainment behavior of house sparrows. Abnormal entrainment occurs in pinealectomized sparrows exposed to 'skeleton' photoperiods (light cycles composed of 2 pulses of light per 24-h cycle). This abnormal entrainment depends upon the state of the locomotor activity (rhythmic or arrhythmic) before exposure to the light cycle, and upon the interval between the 2 pulses of light which constitute the skeleton photoperiod. The conditions that produce abnormal entrainment in pinealectomized birds are strongly correlated with those that produce 2 stable phases of entrainment to skeleton photoperiods in normal birds ('bistability phenomenon'). These results suggest that after pinealectomy, there remains a population of oscillators whose combined output is reflected in the locomotor activity of individual sparrows.

Original languageEnglish (US)
Pages (from-to)245-253
Number of pages9
JournalJournal of Comparative Physiology □ A
Volume146
Issue number2
DOIs
StatePublished - Jun 1982

Fingerprint

Sparrows
Passer domesticus
Photoperiod
entrainment
Birds
photoperiod
bird
Skeleton
birds
skeleton
Passeriformes
Population
Locomotion
locomotion
Light
pineal body
Pineal Gland

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Neuroscience(all)
  • Physiology (medical)
  • Physiology
  • Animal Science and Zoology

Cite this

Entrainment of the circadian system of the house sparrow : A population of oscillators in pinealectomized birds. / Takahashi, Joseph S.; Menaker, Michael.

In: Journal of Comparative Physiology □ A, Vol. 146, No. 2, 06.1982, p. 245-253.

Research output: Contribution to journalArticle

@article{4ff7aef4074c4249a7c45401f010f3bc,
title = "Entrainment of the circadian system of the house sparrow: A population of oscillators in pinealectomized birds",
abstract = "Removal of the pineal gland modifies the entrainment behavior of house sparrows. Abnormal entrainment occurs in pinealectomized sparrows exposed to 'skeleton' photoperiods (light cycles composed of 2 pulses of light per 24-h cycle). This abnormal entrainment depends upon the state of the locomotor activity (rhythmic or arrhythmic) before exposure to the light cycle, and upon the interval between the 2 pulses of light which constitute the skeleton photoperiod. The conditions that produce abnormal entrainment in pinealectomized birds are strongly correlated with those that produce 2 stable phases of entrainment to skeleton photoperiods in normal birds ('bistability phenomenon'). These results suggest that after pinealectomy, there remains a population of oscillators whose combined output is reflected in the locomotor activity of individual sparrows.",
author = "Takahashi, {Joseph S.} and Michael Menaker",
year = "1982",
month = "6",
doi = "10.1007/BF00610244",
language = "English (US)",
volume = "146",
pages = "245--253",
journal = "Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology",
issn = "0340-7594",
publisher = "Springer Verlag",
number = "2",

}

TY - JOUR

T1 - Entrainment of the circadian system of the house sparrow

T2 - A population of oscillators in pinealectomized birds

AU - Takahashi, Joseph S.

AU - Menaker, Michael

PY - 1982/6

Y1 - 1982/6

N2 - Removal of the pineal gland modifies the entrainment behavior of house sparrows. Abnormal entrainment occurs in pinealectomized sparrows exposed to 'skeleton' photoperiods (light cycles composed of 2 pulses of light per 24-h cycle). This abnormal entrainment depends upon the state of the locomotor activity (rhythmic or arrhythmic) before exposure to the light cycle, and upon the interval between the 2 pulses of light which constitute the skeleton photoperiod. The conditions that produce abnormal entrainment in pinealectomized birds are strongly correlated with those that produce 2 stable phases of entrainment to skeleton photoperiods in normal birds ('bistability phenomenon'). These results suggest that after pinealectomy, there remains a population of oscillators whose combined output is reflected in the locomotor activity of individual sparrows.

AB - Removal of the pineal gland modifies the entrainment behavior of house sparrows. Abnormal entrainment occurs in pinealectomized sparrows exposed to 'skeleton' photoperiods (light cycles composed of 2 pulses of light per 24-h cycle). This abnormal entrainment depends upon the state of the locomotor activity (rhythmic or arrhythmic) before exposure to the light cycle, and upon the interval between the 2 pulses of light which constitute the skeleton photoperiod. The conditions that produce abnormal entrainment in pinealectomized birds are strongly correlated with those that produce 2 stable phases of entrainment to skeleton photoperiods in normal birds ('bistability phenomenon'). These results suggest that after pinealectomy, there remains a population of oscillators whose combined output is reflected in the locomotor activity of individual sparrows.

UR - http://www.scopus.com/inward/record.url?scp=34250227894&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34250227894&partnerID=8YFLogxK

U2 - 10.1007/BF00610244

DO - 10.1007/BF00610244

M3 - Article

VL - 146

SP - 245

EP - 253

JO - Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology

JF - Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology

SN - 0340-7594

IS - 2

ER -