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Laterality of the Olfactory Event-Related Potential Response

机译：嗅觉事件相关电位反应的横向性

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摘要

In experimental practice, odors are commonly applied to only one nostril for recordings of olfactory event-related potentials (OERPs), but the lateralization aspect of the OERP response is unclear regarding both stimulated nostril and cortical topography. The purpose of the present study was to investigate whether stimulated-nostril side affects OERP amplitudes and latencies and whether these potentials indicate lateralization of brain response in healthy, right-handed, young adults. OERPs were recorded from nine electrode sites in response to monorhinal stimulation with amyl acetate in 28 participants. The results showed a general increase in amplitude from frontal to parietal electrode sites (in particular for N1/P3) and generally larger amplitudes on the left hemisphere and midline than on the right hemisphere. There was no main effect of stimulated-nostril side on amplitude. Interactions indicated that N1/P2 amplitude was larger for left- than right-nostril stimulation and larger on the left hemisphere and midline than on the right hemisphere in left-nostril stimulation. No main effect or interactions of stimulated-nostril side over latencies were found and no effects on latencies of sagittal or coronal sites. These findings suggest a general parietal, left-hemisphere predominance in response amplitude to odorous stimulation and imply that either the left or the right nostril may be sufficient for accurate assessment of OERP latency in right-handed, young adults.
机译：在实验实践中，气味通常仅应用于一个鼻孔以记录嗅觉相关电位（OERPs），但对于刺激的鼻孔和皮质形态，OERP反应的侧向化方面尚不清楚。本研究的目的是调查受刺激的鼻孔侧是否会影响OERP振幅和潜伏期，以及这些电位是否表明健康的右撇子年轻人中大脑反应的偏侧化。记录了来自28个参与者的九个电极位点响应乙酸戊酯对单鼻刺激的OERPs。结果表明，从额电极到顶电极部位的振幅普遍增加（特别是对于N1 / P3），左半球和中线的振幅通常比右半球的振幅大。刺激性鼻孔侧对振幅没有主要影响。相互作用表明，左鼻孔刺激的N1 / P2幅度大于右鼻孔刺激，而左半球和中线的N1 / P2幅度大于右半球。没有发现主要的影响或受刺激的鼻孔侧面与潜伏期的相互作用，对矢状位或冠状位的潜伏期也没有影响。这些发现表明，在气味刺激的幅度上，顶叶在大脑半球占主导地位，暗示左或右鼻孔可能足以准确评估右撇子青年的OERP潜伏期。

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  • 来源
    《Chemical Senses》 |2006年第7期|699-704|共6页
  • 作者

    Jonas K. Olofsson; Daniel A. Broman; Paul E. Gilbert; Pamela Dean; Steven Nordin; and Claire Murphy;

  • 作者单位

    Department of Psychology Umeå University Umeå Sweden;

    Department of Head and Neck Surgery University of California San Diego San Diego CA USA;

    Department of Psychology San Diego State University San Diego CA USA;

    San Diego State University–University of California San Diego Joint Doctoral Program in Clinical Psychology San Diego CA USA;

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