EEG aperiodic exponent

1. Cognitive testing increases EEG aperiodic exponent in humans (F(2,81.76) = 61.54, p < .001).

   “exponents were generally larger during cognitive tasks compared to rest (F(2,81.76) = 61.54, p < .001)”

   Humansduring administration of the RBANS vs. rest

   Examining the clinical potential of the concurrent EEG aperiodic exponent in cognitive testing

   Journal of clinical and experimental neuropsychology·8 Sep 2025

More on Cognitive testing

1. Older age decreases EEG aperiodic exponent in humans (F(1,42.37) = 26.80, p < .001).

   “exponents were generally larger during cognitive tasks compared to rest (F(2,81.76) = 61.54, p < .001) and in younger versus older adults (F(1,42.37) = 26.80, p < .001).”

   Humansduring cognitive testing and rest

   Examining the clinical potential of the concurrent EEG aperiodic exponent in cognitive testing

   Journal of clinical and experimental neuropsychology·8 Sep 2025

1. Working memory retention is associated with EEG aperiodic exponent in humans.

   “Unexpectedly, both age groups showed decreased (i.e., flattened) aperiodic exponents during retention relative to fixation, with minimal load-dependent effects.”

   HumansRetention relative to fixation during the modified Sternberg task

   The Relationship Between Task-Related Aperiodic EEG Activity, Neural Inefficiency and Verbal Working Memory in Younger and Older Adults

   Psychophysiology·30 Jan 2026

1. Older age is associated with EEG aperiodic exponent in humans.

   “Younger adults consistently demonstrated steeper aperiodic slopes than older adults.”

   HumansDuring verbal working memory

   The Relationship Between Task-Related Aperiodic EEG Activity, Neural Inefficiency and Verbal Working Memory in Younger and Older Adults

   Psychophysiology·30 Jan 2026