Health, Fitness, and Longevity
APR 9, 2026Scicomm Media
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Emotions function as persistent internal brain states
“Emotions are internal states that persist even after the stimulus that triggered them is gone.”
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Aggression and mating share overlapping neural circuits
“The brain circuits for mating and aggression are closely intertwined in the hypothalamus.”
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Estrogen drives aggression in both biological sexes
“Testosterone's effect on aggression often occurs through its conversion to estrogen in the brain.”
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Social isolation triggers tachykinin-driven chronic irritability
“Social isolation leads to an increase in the chemical tachykinin, promoting chronic aggression.”
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Vagus nerve signals internal somatic feeling states
“The vagus nerve is a major conduit for conveying somatic feeling states to the brain.”