The primary mammalian circadian clock resides in the suprachiasmatic nucleus (SCN), a
recipient of dense retinohypothalamic innervation. In its most basic form, the circadian …

The daily sleep–wake cycle is perhaps the most dramatic overt manifestation of the
circadian timing system, and this is especially true for the monophasic sleep–wake cycle of …

Daily rhythms in nature, such as the opening and closing of flowers or patterns of sleep and
wakefulness and their association with the perpetual alteration of night and day, were …

The suprachiasmatic nucleus (SCN) receives a dense serotonergic innervation that
modulates photic input to the SCN via serotonin 1B (5-HT1B) presynaptic receptors on …

Abstract Rationale 5-Hydroxytryptamine 2C (5-HT 2C) receptor agonists reduce the
breakpoint in progressive ratio schedules of reinforcement, an effect that has been attributed …

The hypothalamic suprachiasmatic nucleus (SCN) is a circadian oscillator that receives
glutamatergic afferents from the retina and serotonergic afferents from the midbrain …

The hypothalamic suprachiasmatic nucleus (SCN) is a circadian oscillator that receives a
dense serotonergic innervation from the median raphe nucleus. Serotonin (5-HT) modulates …

Otsuka Long-Evans Tokushima Fatty (OLETF) rats lack cholecystokinin-A receptor (CCK-
AR) because of a genetic abnormality. We observed that body temperature homeostasis in …

The involvement of the 5-HT 1A and the 5-HT 1B receptor in the regulation of sleep and
waking is complex due to a multitude of presynaptic and/or postsynaptic actions also …

Timing performance maintained under the free-operant psychophysical procedure (FOPP) is
sensitive to 5-hydroxytryptamine (5-HT) 1A and 5-HT 2A receptor stimulation. Agonists of …