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S2

S2 S2 is an Encephalofluctuogram Technology (ET) spectral index derived from ultra-slow fluctuations in EEG activity.

S2 is an Encephalofluctuogram Technology (ET) spectral index derived from ultra-slow fluctuations in EEG activity. In ET research, it has been used as an indirect, model-based indicator interpreted as reflecting glutamatergic involvement rather than a direct measurement of glutamate.

Sources

Drafting source: Zhang Xiaoyu; Lin Ling; Wang Huaye; Dai Meixian. Impact of 1-h memory tasks with different cognitive loads on ET-derived indices of neurotransmitter-system involvement in university athletes. 2026; DOI 10.3389/fpsyg.2026.1710518; article XML SHA-256 67d1f2aa7cdf329aedb92968f6e18ca11beeaf238d6ff201fce3a5c5eb6e54b9. “Impact of 1-h memory tasks with different cognitive loads on ET-derived indices of neurotransmitter-system involvement in university athletes” (10.3389/fpsyg.2026.1710518).
CC-BY-4.0 · Definition uses new wording; original source retains its stated licence. · Source snapshot SHA-256: 67d1f2aa7cdf329aedb92968f6e18ca11beeaf238d6ff201fce3a5c5eb6e54b9

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PsychTerms (psychterms.org), CC BY 4.0, version 1. “S2.” Development preview.

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S2

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Sources

Cite this entry