Results 131 to 140 of about 17,879 (182)

MULTIPLE OSCILLATORS IN THE SUPRACHIASMATIC NUCLEUS

Chronobiology International, 2001
The suprachiasmatic nucleus (SCN) of the hypothalamus is the site of the pacemaker that controls circadian rhythms of a variety of physiological functions. Data strongly indicate the majority of the SCN neurons express self-sustaining oscillations that can be detected as rhythms in the spontaneous firing of individual neurons.
Tetsuo Shirakawa
exaly   +3 more sources

Efferent connections of the rat suprachiasmatic nucleus

Neuroscience, 1981
Abstract The efferent projections of the suprachiasmatic nucleus were studied in rats using three different light-microscopic tracing techniques. These techniques included, (1) degeneration subsequent to lesions of the nucleus, (2) autoradiography of axoplasmically-transported molecules following injections of [ 3 H]leucine into the nucleus ...
K J Berkley, R L Moss, F K Stephan
exaly   +3 more sources

Beyond the Suprachiasmatic Nucleus

Chronobiology International, 2003
N Mrosovsky
exaly   +2 more sources

Suprachiasmatic Nucleus Organization

Chronobiology International, 1998
The suprachiasmatic nucleus (SCN) of the hypothalamus is a dominant circadian pacemaker in the mammalian brain controlling the rest-activity cycle and a series of physiological and endocrine functions to provide a foundation for the successful elaboration of adaptive sleep and waking behavior. The SCN is anatomically and functionally organized into two
R Y, Moore, R, Silver
openaire   +2 more sources

Suprachiasmatic nucleus organization

Cell and Tissue Research, 2002
The suprachiasmatic nucleus (SCN) of the hypothalamus is a dominant circadian pacemaker in the mammalian brain controlling the rest-activity cycle and a series of physiological and endocrine functions to provide a foundation for the successful elaboration of adaptive sleep and waking behavior. The SCN is anatomically and functionally organized into two
Robert Y, Moore, Joan C, Speh, Rehana K, Leak   +2 more
openaire   +2 more sources

Efferent Signals of the Suprachiasmatic Nucleus

Journal of Biological Rhythms, 1993
It is well established that the mammalian suprachiasmatic nucleus (SCN) is a biological pacemaker that entrains the activity of organisms to their environment and controls circadian rhyth-micity. However, neither the nature of these coupling signal or signals from the SCN, nor their target or targets in the brain, are well ...
R, Silver, J, LeSauter
openaire   +2 more sources

Identification of the suprachiasmatic nucleus in birds

American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 2001
Circadian rhythms are generated by an internal biological clock. The suprachiasmatic nucleus (SCN) in the hypothalamus is known to be the dominant biological clock regulating circadian rhythms in mammals. In birds, two nuclei, the so-called medial SCN (mSCN) and the visual SCN (vSCN), have both been proposed to be the avian SCN. However, it remains an
T, Yoshimura, S, Yasuo, Y, Suzuki, E, Makino, Y, Yokota, S, Ebihara   +5 more
openaire   +2 more sources

The Suprachiasmatic Nucleus

2010
Diurnal variations in physiology and behavior are ubiquitous in higher organisms. Although some rhythms are driven directly by geophysical cycles of light or temperature, most are generated by internal timers, commonly referred to as biological clocks.
Gabriella Lundkvist, Gene D. Block
openaire   +1 more source

Neurogenesis of the hamster suprachiasmatic nucleus

Brain Research, 1990
Neurogenesis of the hypothalamic suprachiasmatic nucleus (SCN) was described in the Syrian hamster (Mesocricetus auratus) using tritiated [3H]thymidine autoradiography. Pregnant hamsters were given single intraperitoneal injections of [3H]thymidine at different times during prenatal development, and labeled cells were analyzed in the offspring of 4-5 ...
F C, Davis, R, Boada, J, LeDeaux
openaire   +2 more sources