Impact of valence and age on olfactory induced brain activation in healthy women.
作者： Martina Reske , Thilo Kellermann , N. Jon Shah , Frank Schneider , Ute Habel
DOI: 10.1037/A0019289
关键词: Olfaction 、 Dorsolateral prefrontal cortex 、 Odor 、 Stimulation 、 Insula 、 Valence (psychology) 、 Neuroscience 、 Psychology 、 Temporal cortex 、 Arousal
摘要: The aim of the present study was to assess effect age on cerebral correlates olfactory induced negative emotions. We investigated 15 healthy women (aged 21-47) in a functional MRI (fMRI) during passive smelling one odor (rotten yeast) and two control conditions presenting neutral (vanilla) odorless ambient air. Besides odor-specific differences ratings valence (yeast less pleasant than vanilla air), intensity more intense arousal arousing self-ratings verified intended mood induction effect: subjects experienced disgust yeast stimulation compared air vanilla. Along with superior temporal cortex, medial, lateral orbitofrontal activations were found discriminate between vanilla) directly. Activations dorsolateral prefrontal cortex caudate correlated showed stronger valence-related responses vs. younger older women. Stronger BOLD signals within anterior cingulate gyrus, insula motor areas are considered represent an attempt down-regulate strong emotional experience organisms' preparation for withdrawal, respectively. Our results stress role brain regions odor-related coding necessity consider as modulating factor further studies, even relatively young samples.
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