Bauer L O, Bayles R L
Department of Psychiatry, University of Connecticut Health Center, Farmington 06032.
Biol Psychol. 1990 Feb;30(1):21-33. doi: 10.1016/0301-0511(90)90088-e.
Attention-related changes in the human auditory brainstem response and the short-latency somatosensory evoked potential (SLSEP) were demonstrated in separate experiments. In Experiment 1, ABRs were recorded during conditions in which subjects awaited the presentation of either auditory or somatosensory target stimuli. In Experiment 2, median nerve SLSEPs were recorded in a similar task context. Analyses of ABR and SLSEP component amplitudes and latencies revealed that the auditory nerve (wave II) and rostral brainstem (wave V) components of the ABR, and the cervical component (N12) of the SLSEP, were facilitated when attention was directed toward stimuli that were presented in the same sensory modality and receptive field as the EP-eliciting stimuli. These results suggest that central mechanisms can modulate the transmission of auditory and somatosensory information at an early, precortical stage and that these mechanisms play a role in auditory and somatosensory selective attention.
在不同的实验中证实了人类听觉脑干反应（ABR）和短潜伏期体感诱发电位（SLSEP）与注意力相关的变化。在实验1中，在受试者等待听觉或体感目标刺激呈现的条件下记录ABR。在实验2中，在类似的任务背景下记录正中神经SLSEP。对ABR和SLSEP成分的幅度和潜伏期进行分析后发现，当注意力指向与诱发电位刺激处于相同感觉模式和感受野的刺激时，ABR的听神经（波II）和延髓脑干（波V）成分以及SLSEP的颈部成分（N12）会得到促进。这些结果表明，中枢机制可以在早期的皮质前阶段调节听觉和体感信息的传递，并且这些机制在听觉和体感选择性注意中发挥作用。
