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AMA #11: Improve Task Switching & Productivity and Reduce Brain Fog

Huberman Lab

Fri Sep 29 2023



Task Switching:

  • Task switching is a common challenge for many people.
  • It is often confused with cognitive flexibility, but they are not the same thing.
  • The prefrontal cortex plays a crucial role in task switching and cognitive flexibility.
  • The prefrontal cortex allows us to direct our focus and cognition in a context-dependent way.
  • Cognitive flexibility refers to the ability to switch between different types of cognitive operations depending on what we are trying to learn or understand.
  • Task switching experiments typically involve performing one type of mental or physical operation and then being required to switch to a different task at specific intervals.

Transition Periods:

  • Introducing short transition gaps between tasks can improve task switching efficiency.
  • Transition periods allow the brain to disengage from one task and prepare for the next task.
  • Expecting a transition period when moving from one task to another can help manage expectations and reduce frustration.
  • Transition periods should be introduced between tasks, even if they are brief.
  • The duration of the transition period depends on how deeply engaged you were in the previous task.
  • If you were deeply engaged, give yourself a longer transition period (e.g., 5-10 minutes).
  • Even a short transition period of 60-90 seconds can be beneficial if time is limited.
  • During the transition period, avoid introducing new information or engaging with distractions like phones or social media.

Perceptual Exercise - Space-Time Bridging:

  • Shifting visual attention between different locations close to you and far away can enhance your ability to task switch.
  • This perceptual exercise involves focusing on bodily sensations with eyes closed, then shifting visual focus to specific locations on your body with eyes open for 5–15 seconds each.
  • Start by closing your eyes and focusing on bodily sensations for about 5–15 seconds.
  • Open your eyes and focus on a specific location on your body for 5–15 seconds.
  • Shift visual attention to a location about 10 feet away for 5–15 seconds.
  • Continue shifting focus to locations further away, eventually focusing on the farthest point you can see.
  • Close your eyes again and return attention to immediate environment and breathing.

Additional Tools:

  • Short lists of critical tasks (e.g., no more than three) can help prioritize and manage task switching.
  • Recognize that transitioning between tasks takes time, especially when moving from deeply engaged tasks to new ones.
  • Practicing perceptual exercises like space-time bridging can improve neural circuitry involved in task switching and time perception.
  • Space-time bridging involves consciously shifting visual attention between different distances while paying attention to bodily sensations or breathing.