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Cortical alveoli are the defining cellular characteristic of the protist clade Alveolata, otherwise united solely by molecular phylogeny. [3] The name 'Alveolata' is a reference to this trait, [4] [1] present in all representatives of this group: the parasitic apicomplexans and perkinsozoans, [5] the predatory ciliates [2] and colpodellids, [6] [7] the chromerid algae, [8] [9] and the ...
Thalamocortical dysrhythmia (TCD) is a theoretical framework in which neuroscientists try to explain the positive and negative symptoms induced by neuropsychiatric disorders like Parkinson's Disease, neurogenic pain, tinnitus, visual snow syndrome, schizophrenia, obsessive–compulsive disorder, depressive disorder and epilepsy.
The cortical reaction is a process initiated during fertilization that prevents polyspermy, the fusion of multiple sperm with one egg.In contrast to the fast block of polyspermy which immediately but temporarily blocks additional sperm from fertilizing the egg, the cortical reaction gradually establishes a permanent barrier to sperm entry and functions as the main part of the slow block of ...
The CBGTC loop has been implicated in many diseases. For example, in Parkinson's disease, degeneration of dopaminergic neurons leading to decreased activity of the excitatory pathway is thought to result in hypokinesia, [15] and in Huntington's disease, degeneration of GABAergic neurons driving the inhibitory pathway is thought to result in the jerky body movements. [2]
Cortical spreading depression seen using intrinsic optical signal imaging in gyrencephalic brain. Speed 50x. [1] Hemodynamic changes observed after MCA occlusion in IOS. The video has a speed of 50x to better appreciate the SDs through human eye.
Cortical granule (CG) distribution within cortex of human oocyte at metaphase II. Cortical granules are regulatory secretory organelles (ranging from 0.2 um to 0.6 um in diameter) found within oocytes and are most associated with polyspermy prevention after the event of fertilization. [1]
A 2-D model of cortical sensory homunculus. A cortical homunculus (from Latin homunculus 'little man, miniature human' [1] [2]) is a distorted representation of the human body, based on a neurological "map" of the areas and portions of the human brain dedicated to processing motor functions, and/or sensory functions, for different parts of the body.
Recurrent thalamo-cortical resonance or Thalamocortical oscillation is an observed phenomenon of oscillatory neural activity between the thalamus and various cortical regions of the brain.