IELTS Reading detail Practice
The prefrontal cortex, which is heavily impacted by sleep loss, is primarily responsible for...
Question type: sentence completion · Difficulty: advanced
- A. processing external stimuli during microsleeps.
- B. regulating the sleep-wake cycle.
- C. clearing neurotoxins like beta-amyloid.
- D. controlling higher-order executive functions.
Explanation Preview
Paragraph B explicitly states that the prefrontal cortex (PFC) is 'an area critical for executive functions such as planning, judgment, and self-control.' Paragraph E reiterates this, linking the PFC to the 'highest echelons of cognitive processing,' which are executive functions.