嗅覚刺激強度と先行手がかりの有無が眼窩前頭領域の血行動態に与える影響 : 近赤外分光法を用いた検討(第23回大会優秀発表賞抄録)

概要

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Some studies have reported that the orbitofrontal cortex (OFC) increases its activation relative to the intensity of an olfactory stimulus. On the other hand, some studies have suggested that this phenomenon is not observed. The procedural difference of the 2 groups of investigations was the concurrent presentation, or not, of an additional cue. Our study focused on this difference and involved a neuro-imaging technique to investigate the effects, on 6 participants, of a verbal cue and changes of olfactory stimulus intensity. We observed that when the verbal cue was absent, activation of the OFC was related to the stimulus intensity. This result was in agreement with the observations of previous studies. However, although activation of the OFC is linearly related to the intensity of the olfactory stimulus when other cues are present this linear relationship may become unclear.
2005-09-30