Reptilian brain · Threat Response

Acoustic Startle Reflex

An involuntary brainstem reflex to sudden loud sound or abrupt visual change that interrupts thought and resets attention; it habituates with repetition but never fully disappears.

An everyday example

Losing your line of argument when a phone alarm goes off mid-sentence.

What it can cost you

Losing the thread and not returning to it.

Warning signs

  • I lost my place.
  • I did not go back to it.

One thing to do

Numbered points on paper; after any startle, return by number.

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