We are required to perform various tasks efficiently and with great concentration. This depends mainly on the environment in which the work is being done. This study aimed to investigate the effects of background music on work and cerebral blood flow during mental work. In this study, we tested the changes in cerebral blood flow among participants who listened to BGM while performing the calculation and memorization of English words. The block design was adopted as the experimental method. The task and the rest were performed for 5 sets of 30 seconds each. The maximum, minimum, mean, and variance values were calculated from the measurements' results, and the distribution of the sizes was represented in a box whisker diagram. The experimental results showed that the variance of cerebral blood flow between subjects was more significant during computational tasks than at rest, and the group that contained verbal information had higher overall cerebral blood flow than the group that did not. Besides, cerebral blood flow was lower during the task than during rest.
