Attentional selection and identification of visual objects are reflected by distinct electrophysiological responses.
Attentional selection and identification of visual objects are reflected by distinct electrophysiological responses.
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DOI：
10.1007/s00221-007-1002-4
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发表时间：
2007-08
影响因子：
2
通讯作者：
Eimer, Martin
中科院分区：
文献类型：
--
作者：
Mazza, Veronica;Turatto, Massimo;Umilta, Carlo;Eimer, Martin
关键词：
侧化ERP反应在脑后视觉区域测量，以响应视觉搜索阵列，包含一种颜色的单。在定位任务中，反应是由呈现这个单例的视觉半球决定的。在辨别任务中，它们是由单子的形状决定的。虽然N2pc成分在两个任务中以相同的方式被激发，但随后持续的对侧负性始终存在于歧视任务的后端。这种分离表明，这两种激活反应了不同的视觉加工阶段。我们认为，虽然N2pc反映了视觉系统识别和定位场景中相关刺激的能力，但后期持续活动反映了随后对这些刺激的深入分析和识别。
Lateralised ERP responses were measured over posterior visual brain regions in response to visual search arrays that contained one colour singleton. In the localisation task, responses were determined by the visual hemifield where this singleton was presented. In the discrimination task, they were determined by the singletons’ shape. While an N2pc component was elicited in an identical fashion in both tasks, a subsequent sustained contralateral negativity was consistently present at posterior sites in the discrimination task only. This dissociation demonstrates that these two activations reflect distinct visual processing stages. We suggest that while the N2pc reflects the ability of the visual system to both identify and localise a relevant stimulus in the scene, the late sustained activity reflects the subsequent in-depth analysis and identification of these stimuli.
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影响因子：
2.6
作者：
TREISMAN, AM;GELADE, G
通讯作者：
GELADE, G
DOI：
10.1016/0013-4694(96)95711-9
发表时间：
1996-09-01
期刊：
ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY
影响因子：
--
作者：
Eimer, M
通讯作者：
Eimer, M
影响因子：
64.8
作者：
Woodman, GF;Luck, SJ
通讯作者：
Luck, SJ
影响因子：
3.6
作者：
McCollough, Andrew W.;Machizawa, Maro G.;Vogel, Edward K.
通讯作者：
Vogel, Edward K.
DOI：
10.1016/0013-4694(96)95602-3
发表时间：
1996-08-01
期刊：
ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY
影响因子：
--
作者：
Wascher, E;Wauschkuhn, B
通讯作者：
Wauschkuhn, B