Sentences with word «photic»

Sneezing in response to bright light exposure (such as stepping out into the sunshine after sitting in a dark theater) is called photic sneeze reflex; not only is the trait inherited genetically, but your genes even determine how many times you'll sneeze in response to the light.
Results suggest a revised model of circadian entrainment, with the adaptation of the internal clock by external time cue, resulting in a mode of photic entrainment in which light can in parallel reset central and peripheral clocks.
The upper photic zone is low in nutrient concentration, high in light intensity and penetration, and usually higher in temperature.
It should not be surprising that subjecting a young child to hours of novel two dimensional photic stimulation might produce the unwanted and unexpected developmental outcomes described above, yet more acute disorders may present as well.
The activity of melatonin is modulated by external photic signals, and in mammals it is driven by the suprachiasmatic nucleus (SCN) in the hypothalamus.
The lower photic zone is high in nutrient concentration, low in light intensity and penetration and relatively cool.
K.M. Meyer, L.R. Kump, A. Ridgwell; Biogeochemical controls on photic - zone euxinia during the end - Permian mass extinction.
Unlike stereotypic headshaking, photic headshaking generally worsens during work and can occur while the horse is trotting or even cantering, and it will stop abruptly when the horse gets back to the darkened barn.
«I open the curtains to let the beautiful sun shine on my face, triggering my photic sneeze reflex.
The strange phenomenon of «photic sneezing» might shed light on just how muddled our brains can be
Or, sometimes, by a strange bright - light response called the photic sneeze reflex, when people emerge from a movie matinee into brilliant sunshine.
This research not only provides the first clear evidence that microorganisms were directly involved in the deposition of Earth's oldest iron formations; it also indicates that large populations of oxygen - producing cyanobacteria were at work in the shallow areas of the ancient oceans, while deeper water still reached by the light (the photic zone) tended to be populated by anoxyenic or micro-aerophilic iron - oxidizing bacteria which formed the iron deposits.
Although melanopsin is not essential for the circadian clock to receive photic input, it contributes significantly to the magnitude of photic responses.
We conclude that the chemical signature plastic debris acquires in the photic zone can induce foraging behaviours in anchovy schools.
The photic headshake is a relatively abrupt and violent toss, whereas stereotypic headshaking is rhythmic.
I believe the story goes as follows: winter storms cause a lot of mixing; in the spring light triggers phytoplankton activity, and the mixed layer becomes shallower due to surface warming, so the phytoplankton are not mixed out of the photic zone, and these factors conspire to result in a bloom.
The middle photic zone is an area that contains the same values in between that of the lower and upper photic zones.
These photic sneezes are the subject of a recent Scientific American article, from which I learn that «crossed wires in the brain are probably responsible.»
Around 18 - 35 percent of the population is affected by «photic sneeze reflex» where an individual sneezes in reaction to bright light exposure.

Phrases with «photic»

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