Interference of tonic muscle activity on the EEG: a single motor unit study
| Autor: | Oğuz Sebik, Gizem Yilmaz, Paulius Uginčius, Pekcan Ungan, Kemal S. Türker |
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| Přispěvatelé: | Ungan, Pekcan, Sebik, Oğuz, Türker, Kemal Sıtkı (ORCID 0000-0001-9962-075X & YÖK ID 6741), Yılmaz, Gizem, Ugingius, Paulius, School of Medicine, Department of Medical Physiology |
| Rok vydání: | 2014 |
| Předmět: |
medicine.medical_specialty
electromyogram interference Audiology Electroencephalography lcsh:RC321-571 Tonic (physiology) Behavioral Neuroscience Evaluation methods medicine Neurosciences Neurology Original Research Article Muscle activity Head and neck lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry Biological Psychiatry medicine.diagnostic_test business.industry single motor unit electroencephalogram Masticatory force Surgery Motor unit Psychiatry and Mental health Neuropsychology and Physiological Psychology medicine.anatomical_structure muscle artifact Scalp business Psychology Electroencephalogram Electromyogram Interference Muscle artifact Single motor unit Neuroscience |
| Zdroj: | Frontiers in Human Neuroscience Frontiers in Human Neuroscience, Vol 8 (2014) |
| ISSN: | 1662-5161 |
| DOI: | 10.3389/fnhum.2014.00504 |
| Popis: | The electrical activity of muscles can interfere with the electroencephalogram (EEG) signal considering the anatomical locations of facial or masticatory muscles surrounding the skull. In this study, we evaluated the possible interference of the resting activity of the temporalis muscle on the EEG under conventional EEG recording conditions. In 9 healthy adults EEG activity from 19 scalp locations and single motor unit (SMU) activity from anterior temporalis muscle were recorded in three relaxed conditions; eyes open, eyes closed, jaw dropped. The EEG signal was spike triggered averaged (STA) using the action potentials of SMUs as triggers to evaluate their reflections at various EEG recording sites. Resting temporalis SMU activity generated prominent reflections with different amplitudes, reaching maxima in the proximity of the recorded SMU. Interference was also notable at the scalp sites that are relatively far from the recorded SMU and even at the contralateral locations. Considering the great number of SMUs in the head and neck muscles, prominent contamination from the activity of only a single MU should indicate the susceptibility of EEG to muscle activity artifacts even under the rest conditions. This study emphasizes the need for efficient artifact evaluation methods which can handle muscle interferences. NA |
| Databáze: | OpenAIRE |
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