Over-arousal of the limbic system causes many cognitive downsides.

It creates an artificial feeling of clarity to produce action, but maybe bad decisions. It reduces PFC resources, leading to worse understanding, memory, and inhibition. Generalizing effect causes mistaken relation between ideas. Internal awareness falls off making it harder to recover from. Chronic over-arousal creates permanent sense of threat and low threshold for negative reactions.rR1

  1. David Rock, Your Brain at Work: Strategies for Overcoming Distraction, Regaining Focus, and Working Smarter All Day Long, 1st ed (New York: Harper Business, 2009). (See notes.)