Alpha and beta cortical activity during guitar playing: task complexity and audiovisual stimulus analysis

Area of Science:

• Neuroscience
• Music Cognition
• Human Motor Control

Background:

• Limited research exists on the neural correlates of guitar performance, especially concerning sensory stimuli.
• Understanding brain activity during musical tasks is crucial for fields like neuroscience and music therapy.

Purpose of the Study:

• To investigate the electroencephalogram (EEG) patterns, specifically alpha and beta wave activity, during guitar playing.
• To examine how different sensory stimuli (auditory vs. audiovisual) and music complexity influence cortical activity in guitarists.

Main Methods:

• Twenty healthy, right-handed participants performed four tasks involving playing guitar with either auditory or audiovisual stimuli, and easy or complex music.
• Electroencephalogram (EEG) data were recorded during rest and each task, analyzing peak frequency (PF), median frequency (MF), and root mean square (RMS) of alpha and beta bands.

Main Results:

• Alpha wave activity showed increased peak frequency (PF) in the T3-P3 region, particularly when comparing rest to complex music tasks (tasks 3 and 4).
• Beta wave activity exhibited higher PF at C4-P4 and increased RMS at C3-C4 and O1-O2, with significant differences observed between rest and specific tasks involving audiovisual stimuli.
• Complex music execution, regardless of stimulus type, led to increased beta activity in visual cortices.

Conclusions:

• Observing audiovisual stimuli during guitar playing enhances beta activity in the somatosensory and motor cortices.
• Increased alpha activity was noted in the somatosensory and auditory cortices, while beta activity rose in bilateral visual cortices during complex music performance.