An exclamation expressing sudden understanding, realization, or discovery. Often called an 'aha moment' when referring to breakthrough insights.
Natural exclamation found across many languages, representing spontaneous vocal expression of realization. The 'aha moment' terminology was popularized by psychologists studying insight and creativity.
The 'aha moment' is accompanied by a measurable burst of gamma brain waves and increased activity in the anterior temporal lobe, showing that sudden insights have a distinct neurological signature - your brain literally lights up when you have a breakthrough.
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