Abstract

Aim: To analyze the difference of the number of neurons in the cerebrum of Rattus norvegicus offsprings exposed to Mozart, Jazz, Blues, and Rock compilations during pregnancy. Method: Experimental study with single-blind randomized post-test only control group design using Rattus norvegicus as animal subjects that were divided into four groups: Mozart, Jazz, Blues, and Rock groups. The exposures started from the 10 day of gestation for 1 hour in a dark atmosphere with an intensity of 60 dB, in a distance of 25 cm from the exposure box, during March-May 2019. After cesarean delivery at day 19, the offsprings brain were prepared and stained by Hematoxylin-Eosin, then analyzed in 5 fields in each hemisphere with 1000x magnifying microscope. The study was conducted after ethical clearance and used a comparison statistical test chosen accordingly. Result: There were significant differences of the number of neurons between Mozart (71,96 #xB1; 14,44) with Jazz (41,06 #xB1; 7,65), Blues (40,92 #xB1; 6,36), and Rock group (31,31 #xB1; 8,19) with p=0,000. Conclusion: The number of neurons in the cerebrum of Rattus- norvegicus offsprings exposed to Mozart compilation during pregnancy proved to be higher than Jazz, Blues, and Rock compilations.