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These fibres decussate (cross) to the contralateral (opposite) side, so called the sensory decussation. The ascending bundle after the decussation is called the medial lemniscus. Unlike other ascending tracts of the brain, fibres of the medial lemniscus do not give off collateral branches as they travel along the brainstem. [1]
In botanical leaf taxology, the word decussate describes an opposite pattern of leaves which has successive pairs at right angles to each other (i.e. rotated 90 degrees along the stem when viewed from above). In effect, successive pairs of leaves cross each other. Basil is a classic example of a decussate leaf pattern.
The LC neurons are probably the origin of the first or second "leg" of the "PTSD circuit." An important 2005 study of deceased American army veterans from World War II has shown combat-related PTSD to be associated with a postmortem-diminished number of neurons in the locus coeruleus on the right side of the brain. [21]
In fear conditioning, the main circuits that are involved are the sensory areas that process the conditioned and unconditioned stimuli, certain regions of the amygdala that undergo plasticity (or long-term potentiation) during learning, and the regions that bear an effect on the expression of specific conditioned responses.
The clusters of the amygdala are activated when an individual expresses feelings of fear or aggression. This occurs because the amygdala is the primary structure of the brain responsible for fight or flight response. Anxiety and panic attacks can occur when the amygdala senses environmental stressors that stimulate fight or flight response.
Emma Stone has long been open about her battle with anxiety. The actress began experiencing panic attacks when she was 7 and has used everything from therapy to improv to manage the condition.. In ...
The cell bodies of Betz cell neurons are the largest in the brain, approaching nearly 0.1 mm in diameter. The axons of the upper motor neurons project out of the precentral gyrus travelling through to the brainstem, where they will decussate (intersect) within the lower medulla oblongata to form the lateral corticospinal tract on each side of ...
According to Dr. Patrick Porter, developer of brain fitness app BrainTap, TikTok brain is a term used to describe the cognitive and neurological changes observed in individuals who have used the ...
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