SOMATOSENSORY EVOKED-POTENTIAL CHANGES WITH A SELECTIVE ATTENTION TASK
SOMATOSENSORY EVOKED-POTENTIAL CHANGES WITH A SELECTIVE ATTENTION TASK
复制标题
DOI：
10.1111/j.1469-8986.1982.tb02536.x
复制
发表时间：
1982-01-01
期刊：
影响因子：
3.7
通讯作者：
STRAUMANIS, JJ
中科院分区：
文献类型：
--
作者：
JOSIASSEN, RC;SHAGASS, C;STRAUMANIS, JJ
观察与选择性注意相关的体感诱发电位(SEP)变化。在16名受试者中，当他们计算电刺激时，从5个位置记录SEP到4个随机刺激手指中的1个。连续测量的SEP事件包括峰P30(在30ms呈阳性)。P45、N60、P100、N140、P190、N230、P400。计数与较大的P45、P100、P190、N230和P400波幅相关；影响与眼睛或舌头活动无关。旨在揭示与两个概念化通道(手指类、手)相关的变化的分析显示，P45、P100和P190波幅增加涉及两个通道。P400效应仅限于靶指。对N60和N140波幅的通道效应是由于一个通道中无人参与的元件引起的，这表明抑制。潜伏期效应主要涉及手部经络；P30、P45、P100和P190的统计手潜伏期较短。这些发现表明，早期和晚期皮层事件都有选择性注意的改变，这种改变可以是几种类型的。他们支持注意力在不止一个阶段进行的观点。
Somatosensory evoked potential (SEP) changes associated with selective attention were investigated. In 16 human subjects, SEP were recorded from 5 locations while they counted electrical stimuli to 1 of 4 randomly stimulated fingers. Sequential SEP events measured included peaks P30 (positively at 30 ms). P45, N60, P100, N140, P190, N230, P400. Counting was associated with greater P45, P100, P190, N230 and P400 amplitudes; effects were not attributable to eye or tongue activity. Analyses designed to reveal changes associated with 2 conceptualized channels (finger class, hand) showed that the P45, P100 and P190 amplitude increases involved both channels. The P400 effect was limited to the target finger. Channel effects for N60 and N140 amplitudes resulted from decreases localized to the unattended element of one channel, suggesting inhibition. Latency effects involved mainly the hand channel; counted hand latencies were shorter for P30, P45, P100 and P190. The findings indicate modifications of both early and late electrocortical events with selective attention, and that changes can be of several kinds. They support the view that attention proceeds in more than 1 stage.