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In psychology and neuroscience, executive dysfunction, or executive function deficit is a disruption to the efficacy of the executive functions, which is a group of cognitive processes that regulate, control, and manage other cognitive processes. [1] Executive dysfunction can refer to both neurocognitive deficits and behavioural symptoms.
The dysfunction can range from mild and subtle to severe and obvious. There is a tremendous variability in the manifestations of executive dysfunction with strong influences often apparent from the affected person's personality, life experiences and intellect. [5]
It’s still being studied, but researchers know that executive dysfunction comes courtesy of various mental and physical health conditions, and manifests differently depending on the condition.
The executive system has been traditionally quite hard to define, mainly due to what psychologist Paul W. Burgess calls a lack of "process-behaviour correspondence". [98] That is, there is no single behavior that can in itself be tied to executive function, or indeed executive dysfunction. For example, it is quite obvious what reading-impaired ...
The frontal lobe plays a key role in executive functions such as motivation, planning, social behaviour, and speech production. Frontal lobe syndrome can be caused by a range of conditions including head trauma, tumours, neurodegenerative diseases, neurodevelopmental disorders, neurosurgery and cerebrovascular disease.
Inhibitory control, also known as response inhibition, is a cognitive process – and, more specifically, an executive function – that permits an individual to inhibit their impulses and natural, habitual, or dominant behavioral responses to stimuli (a.k.a. prepotent responses) in order to select a more appropriate behavior that is consistent with completing their goals.
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An imbalance between the relative influence between the emotional and executive systems is posited to be responsible for the heightened levels of risk-taking and emotionality observed in adolescents. Specifically, dopamine-rich regions related to motivation, including the ventral striatum which has been shown to represent the appetitive value ...
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