Participants preferred $10 for their group and $5 for another over $11 for both groups.
In a 2021 brain-scan study of 34 people, rival political out-groups blocked learning from successes and failures.
Lucid dreamers traced imagined circles with stuttered eye movements, then tracked a dream thumb with smooth waking-like movements.
Mice may have betrayed their dreams: synchronized eye-direction cells tracked where their eyes appeared to look during REM.
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