Givre S J, Schroeder C E, Arezzo J C
Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461.
Vision Res. 1994 Feb;34(4):415-28. doi: 10.1016/0042-6989(94)90156-2.
This study compared striate and extrastriate contributions to the surface-recorded flash VEP. Laminar visual evoked potential, current source density and multiunit activity profiles were obtained with multicontact electrodes from areas V1 and V4 in three awake macaques. As found earlier, the major striate contribution is to early (N40, P55-80) components. Major contributions to the later (N95, P120, Late Negativity) components arise from V4. Early, afferent-triggered inhibition in V4 also produces a small contribution to N40. Response latencies in V4 vs V1 suggest an input to V4, bypassing V1, emphasizing a parallel processing component of visual system organization.
本研究比较了纹状区和纹状外区对表面记录的闪光视觉诱发电位的贡献。通过多触点电极从三只清醒猕猴的V1区和V4区获取了分层视觉诱发电位、电流源密度和多单位活动图谱。如先前发现的那样，纹状区的主要贡献在于早期（N40、P55 - 80）成分。对后期（N95、P120、晚期负波）成分的主要贡献来自V4区。早期，V4区传入触发的抑制对N40也有小部分贡献。V4区与V1区的反应潜伏期表明存在一条绕过V1区输入到V4区的通路，强调了视觉系统组织的并行处理成分。
