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They don’t meet. Some framework: Spinal nerves contain motor, sensory, and autonomic fibers. Each of these have different pathways. Spinal nerves don’t go to the brain. Rather, they synapse in the spinal cord with other neurons which in turn go to the brain (sometimes requiring one more synapse). In the case of motor neurons, we talk about upper and ...


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Ok, let's talk about mammalian neocortex rather than about the entire central nervous system. The vast majority of synapses within the cortex are formed between neurons within the same cortical area (Binzegger et al 2004). Although most of these synapses will not be self-connections (from a single neuron back to itself), they are recurrent in the sense that ...


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I think the main question here is: Is there a term…which describes a bipolar disorder of lesser severity[?] Yes. There are a couple ways to think about this, but you’re clearly accustomed to differentiating the manic and depressive phases of bipolar disorder, so I’ll start with that. There is mania (excerpted from DSM 5*): A. A distinct period of ...


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It basically means, that the body gets used to certain drugs and that you need to raise the dose to reach an effect. This is for example true for a number of anesthetics or pain medications as morphine. Permanent application leads to a down-regulation of the drug receptor (for morphin this is the mu-opiod receptor) and the activation of counteracting ...


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The biological part of the answer to your question depends on the thing causing the pain. Burning for example, a large burn can be very life threatening biologically but small burns are not as harmful comparatively. But the psychological harm they would cause is phenomenal. This is because large burns open up the body to infections, dehydration and a lot of ...


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You can do PCR or western for certain markers from the extract. GFAP for astrocytes, Tuj1 for neurons, Myelin for oligodendrocytes etc and calculate their percentages to have an estimate of the relative populations. If you are quite used to microscopy and studying these cells then you can identify the different populations of cells with normal light ...


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You might begin your search with the characteristics of Parkinson's disease. This degenerative disorder is precipitated by the death of neurons in the substantia niagra. This brain structure is composed of multiple neurological nuclei. Its function is to connect cortical regions and nuclei together, most significantly with the basal ganglia. The difference ...


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Did you ever get an answer to your question? I know this may be too late now, but I was noseying around and spotted it, so I'll take a stab nonetheless. I could be wrong, but I suspect what you're seeing here may be an extracellular representation of an action potential (and/or it could be a filtering artefact, see below). From the video on the spikerbox ...


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The brain is separated into different regions, and different regions perform different tasks Not really. This kind of claims stem from the early brain research, where every area was thought to specialize in one particular task. Sure, some categorization is possible (e.g. where the visual input is mostly processed). However, your question is basically an ...


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We don't know yet in detail how different cortical areas are wired up, so it's difficult to say to what extent the wiring differs. But the overall structure of different cortical areas is remarkably similar, in terms of the layers of cortex and their cellular components. Certainly the structure of the input is very different between cortical areas, and ...


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These are different things. Nitrogen Narcosis or more commonly Gas Narcosis is the narcotic effect of gasses like Oxygen and Nitrogen under pressure. The effects are most prominent under 30m and commercial/technical dives doing dives to 40/50m on air tend to experience the effects most. (Narcosis is managed by adding an inert gas - in most gases Helium - ...



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