Biochemistry & Analytical Biochemistry

Koki Nakajima

Publications

• Research Article
  Comparison of Cortical Activation during Subtraction in Mental Calculationb and with a Calculator
  Author(s): Yuki Murata, Hisaaki Tabuchi, Toshiaki Watanabe, Saiki Terasawa, Koki Nakajima, Toshie Kobayashi, Zhang Yong, Masao Okuhara, Keisuke Nakade, Suchinda Jarupat Maruo, Satomi Fujimori and Koji Terasawa Yuki Murata, Hisaaki Tabuchi, Toshiaki Watanabe, Saiki Terasawa, Koki Nakajima, Toshie Kobayashi, Zhang Yong, Masao Okuhara, Keisuke Nakade, Suchinda Jarupat Maruo, Satomi Fujimori and Koji Terasawa
  
  Several studies have shown that various types of cognitive processing exist and exert different effects on brain activity. However, when a subject performs the same task, whether the task involves processing or not, such as in mental calculation or with a calculator, the different influences on the brain remain unclear. The purpose of this study was to examine whether the influence of cortical activation when performing mental calculation and using a calculator have different effects on the brain. Fifteen healthy, right-handed participants (mean age, 26.3 ± 8.5 years; 12 men, 27.7 ± 9.0 years; 3 women, 20.6 ± 1.1 years) were recruited as subjects. We measured oxygenated hemoglobin (oxy-Hb) levels while subjects performed subtraction tasks by mental calculation or using a calculator (3 min each). Measurements were made at the front.. View More»
  DOI: 10.4172/2161-1009.1000185

  Abstract PDF