Matteis M, Silvestrini M, Troisi E, Cupini L M, Caltagirone C
IRCCS S. Lucia, Rome, Italy.
J Neurol Sci. 1997 Jul;149(1):57-61. doi: 10.1016/s0022-510x(97)05375-6.
The role of each cerebral hemisphere in the perception and recognition of musical information is not yet well understood. We studied cerebral blood flow changes during a melody perception task and a melody recognition task. Blood flow velocity in the two middle cerebral arteries of twenty right-handed musically naif volunteers were simultaneously measured by means of bilateral transcranial Doppler ultrasonography during two minutes of passive melody listening and two minutes of a melody recognition task. With respect to baseline values, a bilateral increase of flow velocity occurred in the middle cerebral arteries with a non-significant trend for the right artery during the melody perception task. During the melody recognition task, a significant increase in flow velocity was recorded on the right side with respect to the left side, where a slight simultaneous decrease was found. Our data suggest that melody perception requires bilateral activation of hemispheres and melody recognition mainly an activation of the right hemisphere. This study confirms the ability of transcranial Doppler ultrasonography to correlate artery flow dynamics with selective cerebral activation.
大脑两半球在音乐信息感知和识别中的作用尚未得到充分理解。我们研究了在旋律感知任务和旋律识别任务期间的脑血流变化。通过双侧经颅多普勒超声，在20名右利手、未受过音乐训练的志愿者被动聆听旋律的两分钟以及旋律识别任务的两分钟期间，同时测量了他们双侧大脑中动脉的血流速度。相对于基线值，在旋律感知任务期间，大脑中动脉血流速度双侧增加，右侧动脉有不显著的增加趋势。在旋律识别任务期间，右侧血流速度相对于左侧显著增加，而左侧同时有轻微下降。我们的数据表明，旋律感知需要双侧半球激活，而旋律识别主要需要右侧半球激活。本研究证实了经颅多普勒超声将动脉血流动力学与选择性脑激活相关联的能力。
