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In vertebrates, the master circadian clock is contained within the suprachiasmatic nucleus (SCN), a bilateral nerve cluster of about 20,000 neurons. [10] [11] The SCN itself is located in the hypothalamus, a small region of the brain situated directly above the optic chiasm, where it receives input from specialized photosensitive ganglion cells in the retina via the retinohypothalamic tract.
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A circadian rhythm (/ s ər ˈ k eɪ d i ə n /), or circadian cycle, is a natural oscillation that repeats roughly every 24 hours.Circadian rhythms can refer to any process that originates within an organism (i.e., endogenous) and responds to the environment (is entrained by the environment).
A circadian rhythm is an entrainable, endogenous, biological activity that has a period of roughly twenty-four hours. This internal time-keeping mechanism is centralized in the suprachiasmatic nucleus (SCN) of humans, and allows for the internal physiological mechanisms underlying sleep and alertness to become synchronized to external environmental cues, like the light-dark cycle. [4]
Circadia is an implantable device that sends biometric data wirelessly via Bluetooth to a phone or tablet and is powered through inductive charging. [9] The first ever Circadia implant occurred in October 2013 in Essen, Germany, when body modification artist Steve Haworth implanted the device into Grindhouse co-founder Tim Cannon.
Edubuntu, previously known as Ubuntu Education Edition, is an official derivative of the Ubuntu operating system designed for use in classrooms inside schools, homes and communities. [ 1 ] Edubuntu is developed in collaboration with teachers and technologists in several countries.
Academic Earth is a website launched on March 24, 2009, by Richard Ludlow and co-founders Chris Bruner and Liam Pisano, [1] [2] which offers free online video courses and academic lectures from the world's top universities such as UC Berkeley, UCLA, University of Michigan, University of Oxford, Harvard, MIT, Princeton, Stanford, and Yale. [3]
My husband and I separated, and I moved into an apartment near our family home. We wanted to prioritize keeping things stable for our three children.