Describe the general cognitive functions and related brain disease.

Cognitive functions refer to the mental processes that allow individuals to acquire knowledge, reason, solve problems, plan, and execute actions. These functions are essential for daily life and are primarily regulated by the brain. They encompass a wide array of mental abilities such as attention, memory, language, executive functions, perception, and social cognition. Disruptions in these functions often signal underlying brain disease, with cognitive deficits being a key symptom in many neurological and psychiatric conditions. This essay will explore the major cognitive functions and some of the brain diseases associated with their impairment.

### Attention

Attention is the cognitive process that allows individuals to focus on specific information or tasks while filtering out distractions. It is essential for the execution of almost all other cognitive functions. There are different types of attention, including sustained attention (the ability to focus for prolonged periods), selective attention (the ability to focus on specific stimuli while ignoring others), and divided attention (the ability to manage multiple tasks simultaneously).

Impairments in attention can be observed in various brain disorders. For instance, Attention Deficit Hyperactivity Disorder (ADHD) is a common condition where individuals exhibit difficulty sustaining attention, being easily __________ ___ ________ ____ ___ ___ _______ ____ ___.
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