Study on memories of temporal lobes and the principles of lateralization using near infrared spectroscopy

Katsutoshi Kamakura

doi:10.1117/12.725733

5 March 2007 Study on memories of temporal lobes and the principles of lateralization using near infrared spectroscopy

Katsutoshi Kamakura

Proceedings Volume 6595, Fundamental Problems of Optoelectronics and Microelectronics III; 65951G (2007) https://doi.org/10.1117/12.725733
Event: Fundamental Problems of Optoelectronics and Microelectronics III, 2006, Harbin, China

Abstract

In this study we measured the variation of brain blood quantity (Oxy-Hb, Deoxy-Hb and Total-Hb) in the temporal lobes using near infrared spectroscopy (NIRS) when the tasks of the memories were presented to the subjects. The memories are classified into the short-term memory (STM) and the long-term memory (LTM) including the episodic and semantic memories. The subjects joined in this study are 11 persons who are university students including graduate students. We used the language task of letter-number sequencing, also reverse sequencing to measure STM and the task of the episodic memory to measure LTM. As a result of analysis, concerning the episodic memory, the variation of Oxy-Hb in the left temporal lobe was larger than that of Oxy-Hb in the right temporal lobe. The result might suggest that the episodic memory has a relationship with cerebral dominance concerning language area in the left temporal lobe. It seems that the episodic memory meditated with the function of language used in this study is much stored in the left temporal lobe than in the right temporal lobe. This result coincides with the principles of lateralization. The variation of Oxy-Hb in the language task of letter-number sequencing was smaller than that of Oxy-Hb in the language task of the episodic memory.

Citation Download Citation

Katsutoshi Kamakura "Study on memories of temporal lobes and the principles of lateralization using near infrared spectroscopy", Proc. SPIE 6595, Fundamental Problems of Optoelectronics and Microelectronics III, 65951G (5 March 2007); https://doi.org/10.1117/12.725733

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KEYWORDS

Near infrared spectroscopy

Brain

Scanning tunneling microscopy

Blood

Cognition

Computed tomography

Electrical engineering

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