Representation of Salty Taste Stimulus Concentrations in the Primary Gustatory Area in Humans
Representation of Salty Taste Stimulus Concentrations in the Primary Gustatory Area in Humans
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DOI：
10.1007/s12078-008-9030-4
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发表时间：
2008-12-01
影响因子：
1
通讯作者：
Ogawa, Hisashi
中科院分区：
文献类型：
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作者：
Kobayakawa, Tatsu;Saito, Sachiko;Ogawa, Hisashi
人类味觉皮层的神经元活动与味觉刺激物浓度之间的关系还不清楚。在这项研究中，我们记录了人类大脑磁场的变化，以响应四种浓度的NaCl（30 mM，100 mM，300 mM，和1 M），并测量了在大脑皮层（PGA）的初级味觉区的等效电流偶极子（ECD）的幅度和最短潜伏期。在整个NaCl浓度范围内，PGA中ECD的平均幅度以浓度依赖性方式增加。然而，ECD的最短潜伏期并不随刺激浓度而变化。
The relationship between neuronal activity in the human gustatory cortex and the concentrations of taste stimuli is not well understood. In this study, we recorded changes in the magnetic fields of the human brain in response to four concentrations of NaCl (30 mM, 100 mM, 300 mM, and 1M) and measured the magnitude and shortest latency of the equivalent current dipole (ECD) in the primary gustatory area of the cerebral cortex (PGA). The average magnitude of ECDs in the PGA increased in a concentration-dependent manner throughout the entire range of NaCl concentrations. The shortest latency of the ECD, however, did not vary with the stimulus concentration.