Tag Archives: circadian

Chrysanthemums adapt to irregular lighting patterns that disrupt their normal circadian rhythm — and, if cumulative light duration is short, they grow faster to compensate 0

Interesting, for those of us who wondered how erratic interior lighting affects plants Katrine Heinsvig Kjaer and Carl-Otto Ottosen were curious about plant growth under greenhouse conditions in which northern hemisphere growers turned grow lights on during off-peak electricity times and off during more costly peak periods: Leaf expansion and stem elongation occurred at a [...]

Categories: Environment,Science

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Published:
14 December 2011 – 14:48
Author:
By BrainiYak

Tweets analysis shows regularly occurring daily and day length-related mood changes across cultures 0

Twitter permits a novel approach to mood research Scott Golder and Michael Macy measured “positive” and “negative affect” in 2.4 million English speakers’ 509 million total tweets — made between February 2008 and January 2010 — in eighty-four different countries. Affect was assessed using the “Linguistic Inquiry and Word Count” lexicon. By approaching mood analysis [...]

Categories: Psychology

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Published:
19 October 2011 – 10:04
Author:
By BrainiYak

Electrical output from suprachiasmatic nucleus declines with age, leading to reduced circadian sleep quality in some mammals and (presumably) man — a discovery that explains what many of us have directly experienced as we age 0

This may be a potentially useful neuro-behavioral finding Gene Block (University of California – Los Angeles) spoke to reporter Stuart Wolpert about the research he and Christopher Colwell have done: “It is very clear that animals’ circadian systems begin to deteriorate as they age, and humans have enormous problems with the quality of their sleep [...]

Categories: Medicine,Psychology,Science

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Published:
26 July 2011 – 12:31
Author:
By BrainiYak