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The slice preparation or brain slice is a laboratory technique in electrophysiology that allows the study of neurons from various brain regions in isolation from the rest of the brain, in an ex-vivo condition. Brain tissue is initially sliced via a tissue slicer then immersed in artificial cerebrospinal fluid (aCSF) for stimulation and/or ...
The claustrum (Latin, meaning "to close" or "to shut") is a thin sheet of neurons and supporting glial cells in the brain, that connects to the cerebral cortex and subcortical regions including the amygdala, hippocampus and thalamus.
He showed how the slow wave density increases through the night and then drops off at the beginning of the day while the circadian rhythm is like a sinusoid. He proposed that the pressure to sleep was the maximum when the difference between the two was highest. In 1993, a different model called the opponent process model [98] was proposed. This ...
Brain activity slows down, muscles and bones strengthen, hormones regulate, and the immune system is supported. REM, stage 4. During REM sleep, your brain is almost as active as when you’re awake.
The selection of the common swift as a model stemmed from observations elucidating the fact that the common swift left its nest at night, only returning in the early morning. Still, evidence for USWS is strictly circumstantial and based on the notion that if swifts must sleep to survive, they must do so via aerial roosting as little time is ...
When you have healthy sleep, the glymphatic system in your brain—which pumps out waste products—is more active and efficient, Winter explains. But on the flip side, when you have poor sleep ...
The physiological blood-flow response largely decides the temporal sensitivity, how well neurons that are active can be measured in BOLD fMRI. The basic time resolution parameter is the sampling rate, or TR, which dictates how often a particular brain slice is excited and allowed to lose its magnetization. TRs could vary from the very short ...
Images of the brain of flies. Visualization of dendritic spines using Golgi Method. SynapseWeb. Includes a time-lapse study of Golgi impregnation. Berrebi, Albert: Cell Biology of Neurons: Structure and Methods of Study. (in PDF) Stained brain slice images which include the "Golgi-stained neurons" at the BrainMaps project