Traveling waves in the prefrontal cortex during working memory

Neural oscillations are evident across cortex but their spatial structure is not well- explored. Are oscillations stationary or do they form "traveling waves", i.e., spatially organized patterns whose peaks and troughs move sequentially across cortex? Here, we show that oscillations in the...

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Bibliographic Details
Published in:PLoS computational biology 2022-01, Vol.18 (1), p.e1009827-e1009827
Main Authors: Bhattacharya, Sayak, Brincat, Scott L, Lundqvist, Mikael, Miller, Earl K
Format: Article
Language:English
Subjects:
Animals
Arrays
Biology and Life Sciences
Brain Waves - physiology
Computational Biology
Electrodes
Engineering and Technology
Frequencies
Macaca mulatta
Male
Medicine and Health Sciences
Memory
Memory tasks
Memory, Short-Term - physiology
Mental task performance
Oscillations
Physical Sciences
Physiological aspects
Prefrontal cortex
Prefrontal Cortex - physiology
Short term memory
Social Sciences
Task Performance and Analysis
Traveling waves
Trends
Waves
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Summary:Neural oscillations are evident across cortex but their spatial structure is not well- explored. Are oscillations stationary or do they form "traveling waves", i.e., spatially organized patterns whose peaks and troughs move sequentially across cortex? Here, we show that oscillations in the prefrontal cortex (PFC) organized as traveling waves in the theta (4-8Hz), alpha (8-12Hz) and beta (12-30Hz) bands. Some traveling waves were planar but most rotated. The waves were modulated during performance of a working memory task. During baseline conditions, waves flowed bidirectionally along a specific axis of orientation. Waves in different frequency bands could travel in different directions. During task performance, there was an increase in waves in one direction over the other, especially in the beta band.
ISSN:1553-7358
1553-734X
1553-7358
DOI:10.1371/journal.pcbi.1009827