Causal claim
Bright Light Therapy Depressive EpisodeThey pull in opposite directions: more cause, less effect. The map scores it at 52% confidence, weighed from 2 articles.
Morning bright light re-entrains the circadian pacemaker that light-sensitive mood circuits depend on; a dose-escalation RCT in bipolar depression and a triple-chronotherapy RCT both showed significant, rapid depressive-symptom reductions.
Nothing upstream on the map yet.