CEREBRAL BLOOD FLOW PATTERN SYNCHRONIZATION WITH TIME SEQUENCES OF MUSIC

  • Masakazu Iwasaka
  • Takuro Ishii
  • Takao Uehara
  • Madoka Shimo
  • Sachiko Agehara
  • Katsuo Sugita

Abstract

We investigated the brain hemodynamics of musicians by means of near infrared spectroscopy. The hemodynamics related to musical recognition processes in the human brain were investigated by utilizing a system based on NIRS. Optical absorption at 690 - 830 nm in the frontal and temporal lobes was measured when the subject was exposed to musical stimulation. During the playing of a keyboard instrument such as a piano, the player’s frontal lobe showed a clear and reversible decline in the level of blood flow. Apparently, the blood flow pattern in frontal region synchronized with the sequence of music following its composition along a time axis. The results also indicated that as well as structures in the sequences of the compositions, the level of musical training and the human-instrument interface affected the dynamics of blood flow, which reflected brain activity. However, synchronization of the blood flow dynamics with the musical structures of an individual composition was reproducibly observed in a specific pattern of changes in the blood flow in a human brain cortex.

Author Biographies

Takuro Ishii


Katsuo Sugita


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