searching for the place I’d stopped taking anatomy and physiology notes yesterday, I found this:

reticular activating system (RAS)- the ascending part of the reticular formation, consisting of axons that project to the cerebral cortex.

  • activation of the RAS is associated with attention span, consciousness, and waking
  • inactivation produces sleep

attention span-




And that was it.  Apparently, whatever the technical definition of attention span is, I haven’t got one.

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