Image Source: Wikimedia Commons

Patients who previously showed no fear to external stimuli have shown panic attacks when asked to inhale carbon dioxide. This gives interesting insights into fear mechanisms of the brain.

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Why this aversion to some sounds? [Image Credit:]

Why is the sound of nails on a blackboard (and to some of us, even the thought of it) enough to make us wince and cover our ears? How do our ears respond differently to them?

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Having excellent autobiographical memory could be a result of your brain being structured differently. [Image Credit:]

Highly Superior Autobiographical Memory is different from ordinary good memory, and has been linked to a difference in the structure of the brain.

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