The abstract is read at the publisher; the summary is JClub's.
In mice, infraslow (0.05–0.1 Hz) spontaneous activity of TMN histaminergic neurons gates reward-associative memory expression by priming BLA circuit responsiveness.
- Why it matters: Memory output varies across trials despite identical cues, implying that ongoing brain state biases accessibility, but the cellular and circuit mechanisms were unclear.
- What they did: The authors tracked TMN histaminergic activity and used closed-loop cue delivery plus brief optogenetic activation or inhibition before cues; they also stimulated histaminergic terminals in the BLA and measured BLA population responses.
- The result: High histaminergic states enhanced memory expression, while pre-cue inhibition impaired cue-evoked BLA responses; terminal activation in the BLA was sufficient to boost memory expression.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.