The noisy brain: power of resting-state fluctuations predicts individual recognition performance
- Grossman, Shany
- Yeagle, Erin M
- Harel, Michal
- Espinal, Elizabeth
- Harpaz, Roy
- Noy, Niv
- Megevand, Pierre Bastien
- Groppe, David M
- Mehta, Ashesh D
- Malach, Rafael
DOIAbstract
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...
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