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tag circadian clocks evolution neuroscience

Newborn baby rats lie in a basket
Mother’s Circadian Rhythms Mirrored in Fetal Rat Brains
Bianca Nogrady | Sep 12, 2022 | 2 min read
Before their own central clocks develop, the brains of fetal rats detect their mother’s metabolic cycle to help regulate the expression of certain genes.
Opsin mediates circadian clock
Laura Hrastar(lhrastar@the-scientist.com) | Jan 27, 2005 | 3 min read
Research shows that melanopsin acts as a bistable pigment in vertebrate ganglion
New circadian timer?
Jef Akst | Jan 25, 2011 | 4 min read
Researchers identify a metabolic pathway that appears to maintain its own 24-hour cycle, challenging the traditional view of a purely transcription-driven biological clock
Clocking monarch migration
Bob Grant | Jan 6, 2008 | 2 min read
Researchers have uncovered key genetic mechanisms underlying one of the most impressive feats of animal linkurl:migration;http://www.the-scientist.com/news/display/53974/# on Earth: the autumnal voyage of monarch butterflies from eastern North America to distant Mexican fir forests. In this week's issue of __PLoS Biology__, neurobiologist linkurl:Steven Reppert;http://www.umassmed.edu/neuroscience/faculty/reppert.cfm?start=0 and colleagues from the University of Massachusetts Medical School and
A Nile rat sitting atop fruits
Genome Spotlight: Nile Rat (Avicanthis niloticus)
Christie Wilcox, PhD | Nov 23, 2022 | 4 min read
A reference sequence for this emerging model organism will facilitate research on type 2 diabetes and the health effects of circadian rhythm disruption.
Who Sleeps?
The Scientist and Jerome Siegel | Mar 1, 2016 | 10+ min read
Once believed to be unique to birds and mammals, sleep is found across the metazoan kingdom. Some animals, it seems, can’t live without it, though no one knows exactly why.
How Time Is Encoded in Memories
Catherine Offord | May 1, 2020 | 10+ min read
Rats and equations help researchers develop a theory of how our brains keep track of when events took place.
Southbound genes
Amber Dance | Apr 7, 2009 | 3 min read
A genome study in monarch butterflies pulls out a set of 40 key players in long distance migration
Sleep adjusts fly synapses
Bob Grant | Apr 1, 2009 | 3 min read
New findings support a controversial hypothesis about the biological role of sleep: Snoozing may be a way for the brain to clear clutter accumulated after a hard day of synapse forming and strengthening. Two __Science__ studies published today suggest that the brains of sleeping __Drosophila__ undergo an overall depression in synaptic strength and number, eliminating some minor neuronal connections while merely weakening stronger ones.Expression of synaptic markers is low aftersleep (left) and h
Chronobiology Researchers Say Their Field's Time Has Come
Ricki Lewis | Dec 10, 1995 | 5 min read
Like many life sciences, chronobiology is a field that has transitioned from the organismal level, to anatomical dissection, to molecular analysis. 

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