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reactivity

reactivity In EEG, reactivity means how much brain rhythms change when conditions change.

In EEG, reactivity means how much brain rhythms change when conditions change. In this packet, alpha reactivity refers specifically to the drop in alpha-wave activity when a person opens their eyes, a response that can be weaker with aging and in some dementias.

Sources

Drafting source: Baek Kwangyeol. EEG alpha reactivity in cognitive aging and dementia: clinical implications and cholinergic mechanisms. 2026; DOI 10.3389/fnhum.2026.1665301; article XML SHA-256 2df09f1d8fe6d84f8974d36ff12ea52bcfe41f8529796631e05cc85eab55301c. “EEG alpha reactivity in cognitive aging and dementia: clinical implications and cholinergic mechanisms” (10.3389/fnhum.2026.1665301).
CC-BY-4.0 · Definition uses new wording; original source retains its stated licence. · Source snapshot SHA-256: 2df09f1d8fe6d84f8974d36ff12ea52bcfe41f8529796631e05cc85eab55301c

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

Version 1 · SHA-256: 4a30ac8b77a707d00dae26ab7b3915a03f0119eafaef2a5134887433db17ff3a

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reactivity

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Sources

Cite this entry