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Scientific article
Open access
English

The noisy brain: power of resting-state fluctuations predicts individual recognition performance

Published inCell Reports, vol. 29, no. 12, p. 3775-3784.e4
Publication date2019
Abstract

The unique profile of strong and weak cognitive traits characterizing each individual is of a fundamental significance, yet their neurophysiological underpinnings remain elusive. Here, we present intracranial electroencephalogram (iEEG) measurements in humans pointing to resting-state cortical "noise" as a possible neurophysiological trait that limits visual recognition capacity. We show that amplitudes of slow (<1 Hz) spontaneous fluctuations in high-frequency power measured during rest were predictive of the patients' performance in a visual recognition 1-back task (26 patients, total of 1,389 bipolar contacts pairs). Importantly, the effect was selective only to task-related cortical sites. The prediction was significant even across long (mean distance 4.6 ± 2.8 days) lags. These findings highlight the level of the individuals' internal "noise" as a trait that limits performance in externally oriented demanding tasks.

Keywords
  • Adult
  • Brain/physiology
  • Brain Mapping/methods
  • Female
  • Humans
  • Recognition
  • Psychology
  • Rest/physiology
  • Task Performance and Analysis
Citation (ISO format)
GROSSMAN, Shany et al. The noisy brain: power of resting-state fluctuations predicts individual recognition performance. In: Cell Reports, 2019, vol. 29, n° 12, p. 3775–3784.e4. doi: 10.1016/j.celrep.2019.11.081
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ISSN of the journal2211-1247
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