Cortical gamma-oscillations modulated by auditory-motor tasks-intracranial recording in patients with epilepsy

Tetsuro Nagasawa, Robert Rothermel, Csaba Juhász, Miho Fukuda, Masaaki Nishida, Tomoyuki Akiyama, Sandeep Sood, Eishi Asano

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Human activities often involve hand-motor responses following external auditory-verbal commands. It has been believed that hand movements are predominantly driven by the contralateral primary sensorimotor cortex, whereas auditory-verbal information is processed in both superior temporal gyri. It remains unknown whether cortical activation in the superior temporal gyrus during an auditory-motor task is affected by laterality of hand-motor responses. Here, event-related γ-oscillations were intracranially recorded as quantitative measures of cortical activation; we determined how cortical structures were activated by auditory-cued movement using each hand in 15 patients with focal epilepsy. Auditory- verbal stimuli elicited augmentation of γ-oscillations in a posterior portion of the superior temporal gyrus, whereas hand-motor responses elicited γ-augmentation in the pre-and postcentral gyri. The magnitudes of such γ-augmentation in the superior temporal, precentral, and postcentral gyri were significantly larger when the hand contralateral to the recorded hemisphere was required to be used for motor responses, compared with when the ipsilateral hand was. The superior temporal gyrus in each hemisphere might play a greater pivotal role when the contralateral hand needs to be used for motor responses, compared with when the ipsilateral hand does.

Original languageEnglish
Pages (from-to)1627-1642
Number of pages16
JournalHuman Brain Mapping
Volume31
Issue number11
DOIs
Publication statusPublished - Nov 1 2010
Externally publishedYes

Keywords

  • Cross-modal spatial attention
  • Electroencephalography (EEG)
  • Event-related synchronization (ERS)
  • In-vivo animation movie
  • Pediatric epilepsy surgery

ASJC Scopus subject areas

  • Anatomy
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Neurology
  • Clinical Neurology

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  • Cite this

    Nagasawa, T., Rothermel, R., Juhász, C., Fukuda, M., Nishida, M., Akiyama, T., Sood, S., & Asano, E. (2010). Cortical gamma-oscillations modulated by auditory-motor tasks-intracranial recording in patients with epilepsy. Human Brain Mapping, 31(11), 1627-1642. https://doi.org/10.1002/hbm.20963