What type of cognitive deficits did Brennan exhibit during his initial assessment for chronic traumatic encephalopathy?

Brennan's initial assessment for chronic traumatic encephalopathy indicating impairments in executive functions aligns with the cognitive deficits typically observed in individuals with this condition. Executive functions encompass a range of higher-level cognitive processes, including planning, decision-making, problem-solving, and impulse control. In cases of chronic traumatic encephalopathy, which results from repeated head injuries, deficits in these areas are often prominent as the brain regions responsible for executive functioning are affected by the accumulation of tau proteins and neurodegeneration.

This choice reflects the nature of how cognitive processes can be disrupted in those with a history of concussions or traumatic brain injuries, rather than focusing exclusively on memory loss, speech production, or personality changes. While these other cognitive and behavioral changes can occur, the specific impact on executive functions is a critical aspect of the assessment for chronic traumatic encephalopathy and highlights how such injuries can alter an individual’s ability to function effectively in daily life.