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A part of the discoveries that resulted in them winning the 1981 Nobel Prize [15] was that there were cortical columns in vision as well, and that the neighboring columns were also related in function in terms of the orientation of lines that evoked the maximal discharge. Hubel and Wiesel followed up on their own studies with work demonstrating ...
Given the diversity of functions performed in different parts of the nervous system, there is a wide variety in their shape, size, and electrochemical properties. For instance, the soma of a neuron can vary from 4 to 100 micrometers in diameter.
Information about the structure and function of the human brain comes from a variety of experimental methods, including animals and humans. Information about brain trauma and stroke has provided information about the function of parts of the brain and the effects of brain damage. Neuroimaging is used to visualise the brain and record brain ...
In vertebrates, the part of the brain that plays the greatest role is the hypothalamus, a small region at the base of the forebrain whose size does not reflect its complexity or the importance of its function. [104] The hypothalamus is a collection of small nuclei, most of which are involved in basic biological functions.
Based upon its structure and connectivity, its function is suggested to be related to coordination of different brain functions; i.e. the conductor analogy. Consciousness functionally can be divided into two components: (i) wakefulness, which is arousal and alertness; (ii) content of consciousness, which is the processing of content.
The major anatomical parts of this network are the dorsolateral prefrontal cortex and the posterior parietal cortex. Brain imaging research has shown this network becomes more active during cognitively demanding tasks, unlike other networks such as the Default Mode Network, which reduces activity during cognitive tasks. [29]
Samples from eight of the cadavers contained microplastics — tiny bits of plastic that ranged from 5.5 micrometers to 26.4 micrometers in size. ... these parts of the brain through the olfactory ...
Brain cells make up the functional tissue of the brain. The rest of the brain tissue is the structural stroma that includes connective tissue such as the meninges, blood vessels, and ducts. The two main types of cells in the brain are neurons, also known as nerve cells, and glial cells, also known as neuroglia. [1]