Spatiotemporal organization of fast (>200 Hz) electrical oscillations in rat vibrissa/barrel cortex
Spatiotemporal organization of fast (>200 Hz) electrical oscillations in rat vibrissa/barrel cortex
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DOI：
10.1152/jn.1999.82.3.1599
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发表时间：
1999-09-01
影响因子：
2.5
通讯作者：
Barth, DS
中科院分区：
文献类型：
--
作者：
Jones, MS;Barth, DS
用64通道电极阵列研究了清醒和麻醉状态下大鼠皮层表面快速（>200 Hz）电振荡的时空特性。瞬时触须位移是有效的，在唤起振荡反应的触须/桶场，并紧紧地锁定时间刺激发作，符合最早的时间成分的一致慢波响应。触须诱发的快速振荡表现出模态特异性，最早和最大幅度的皮质桶，这对应于触须刺激，扩散到顺序从事：相邻的桶在随后的振荡周期。该反应增强后，成对的触须刺激，是敏感的单独的触须运动之间的时间延迟。这些数据表明，时空之间的相互作用，快速振荡爆发在桶场可能发挥作用，在快速整合信息的触须阵列在最早的皮层反应体感刺激。
A 64-channel electrode array was used to study the spatial and temporal characteristics of fast (>200 Hz) electrical oscillations recorded from the surface of rat cortex in both awake and anesthetized animals. Transient vibrissal displacements were effective in evoking oscillatory responses in the vibrissa/barrel field and were tightly time-locked to stimulus onset, coinciding with the earliest temporal components of the coincident slow-wave response. Vibrissa-evoked fast oscillations exhibited modality specificity and were earliest and of largest amplitude over the cortical barrel, which corresponded to the vibrissa stimulated, spreading to sequentially engage: neighboring barrels over subsequent oscillatory cycles. The response was enhanced after paired-vibrissal stimulation and was sensitive to time delays between movement of separate vibrissae. These data suggest that spatiotemporal interactions between fast oscillatory bursts in the barrel field may play a role in rapidly integrating information from the vibrissal array during the earliest cortical response to somatosensory stimulation.