Pupil size reveals differences between speaking aloud and inner speech

October 15, 2026 · 2:00 pm 1 sources

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• Pupil size reveals differences between speaking aloud and inner speech
  Phys.org · October 15, 2026 14:00
  Even when we are silent, we often talk to ourselves in our heads, using words to guide our thoughts and actions. This "inner speech" is thought to be involved in thinking and self-control.