The effects of neck flexion on cerebral potentials evoked by visual, auditory and somatosensory stimuli and focal brain blood flow in related sensory cortices.
The effects of neck flexion on cerebral potentials evoked by visual, auditory and somatosensory stimuli and focal brain blood flow in related sensory cortices.
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DOI：
10.1186/1880-6805-31-31
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发表时间：
2012-12-03
影响因子：
3.1
通讯作者：
Irei M
中科院分区：
文献类型：
--
作者：
Fujiwara K;Kunita K;Kiyota N;Mammadova A;Irei M
颈部弯曲的姿势会导致大脑的非特异性激活。感觉诱发脑电位和局灶性脑血流已被用来评估感觉皮层的激活。我们研究了屈颈姿势对视觉、听觉和躯体感觉刺激诱发的脑电位以及相关感觉皮层的局灶性脑血流的影响。12名健康的年轻人接受了右视觉半野，双耳听觉和左正中神经刺激，同时颈部处于休息和屈曲（20°屈曲）位置。在视觉、听觉和体感刺激期间，从右侧枕区（Cz）记录感觉诱发电位，Cz符合国际10-20系统，C4后方2 cm。使用近红外光谱法测量各自感觉皮层中的氧化血红蛋白浓度。颈屈位时，各感觉诱发电位晚成分的潜伏期均明显缩短，听觉诱发电位的振幅均明显增加。在颈部屈曲位置的视觉刺激期间，左右视觉皮质中的氧化血红蛋白浓度较高。左侧视觉皮质负责接收视觉信息。此外，在听觉刺激过程中，在双侧听觉皮层中的氧化血红蛋白浓度，在体感刺激过程中，在右侧体感皮层中，在颈部屈曲位置较高。视觉，听觉和体感通路激活颈部屈曲。感觉皮层被选择性激活，反映了感觉投射到大脑皮层和半球间连接的方式。
A flexed neck posture leads to non-specific activation of the brain. Sensory evoked cerebral potentials and focal brain blood flow have been used to evaluate the activation of the sensory cortex. We investigated the effects of a flexed neck posture on the cerebral potentials evoked by visual, auditory and somatosensory stimuli and focal brain blood flow in the related sensory cortices. Twelve healthy young adults received right visual hemi-field, binaural auditory and left median nerve stimuli while sitting with the neck in a resting and flexed (20° flexion) position. Sensory evoked potentials were recorded from the right occipital region, Cz in accordance with the international 10–20 system, and 2 cm posterior from C4, during visual, auditory and somatosensory stimulations. The oxidative-hemoglobin concentration was measured in the respective sensory cortex using near-infrared spectroscopy. Latencies of the late component of all sensory evoked potentials significantly shortened, and the amplitude of auditory evoked potentials increased when the neck was in a flexed position. Oxidative-hemoglobin concentrations in the left and right visual cortices were higher during visual stimulation in the flexed neck position. The left visual cortex is responsible for receiving the visual information. In addition, oxidative-hemoglobin concentrations in the bilateral auditory cortex during auditory stimulation, and in the right somatosensory cortex during somatosensory stimulation, were higher in the flexed neck position. Visual, auditory and somatosensory pathways were activated by neck flexion. The sensory cortices were selectively activated, reflecting the modalities in sensory projection to the cerebral cortex and inter-hemispheric connections.
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影响因子：
2.9
作者：
Hoshiyama, M;Kakigi, R
通讯作者：
Kakigi, R
影响因子：
4.7
作者：
Ponton, C;Eggermont, JJ;Don, M
通讯作者：
Don, M
影响因子：
3
作者：
Fujiwara, K;Kunita, K;Miyaguchi, A
通讯作者：
Miyaguchi, A
影响因子：
3.3
作者：
Ehlis, A. -C.;Ringel, T. M.;Fallgatter, A. J.
通讯作者：
Fallgatter, A. J.
影响因子：
2
作者：
GRANTYN, A;BERTHOZ, A
通讯作者：
BERTHOZ, A