Perception, cognition and emotions are closely tied to autonomic nervous control in specific ways and at various levels of the neuraxis. Studies suggest that cognitive processing, especially executive functions, is impaired in conditions with reduced autonomic regulatory capacity such as cardiovascular disease or hypertension. Studies suggest that even in healthy population, cognitive function is related to parasympathetic function. Psychiatric disorders such as schizophrenia and depression show cognitive deficits. Weather autonomic dysfunction is associated to cognitive impairment is a matter current research.
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