The latency of a visual evoked potential tracks the onset of decision making
The latency of a visual evoked potential tracks the onset of decision making
复制标题
视觉诱发电位的潜伏期追踪决策的开始
DOI：
10.1016/j.neuroimage.2019.04.052
复制
发表时间：
2019
期刊：
影响因子：
5.7
通讯作者：
Srinivasan, Ramesh
中科院分区：
文献类型：
--
作者：
Nunez, Michael D.;Gosai, Aishwarya;Vandekerckhove, Joachim;Srinivasan, Ramesh
对感觉刺激进行编码被认为是知觉决策的第一步。先前的研究表明，从人脑记录的电信号跟踪知觉决策过程中证据的积累(Gold and Shadlen，2007；O‘Connell等人，2012；Philastids等人，2014)。在这项研究中，我们直接测试了脑电记录的N200潜伏期(在人类刺激呈现后150到275ms之间出现的负峰值)反映了在证据积累之前完成图形-背景分离所需的视觉编码时间(VET)的假设。我们发现，N200潜伏期因个体而异，受外部视觉噪声的调制，当N200潜伏期增加X毫秒时，反应时间增加X毫秒，反映线性回归斜率为1。认知决策理论的模拟表明，包括VET在内的与证据积累无关的人类反应时间的变化被最快的反应时间跟踪。通过拟合试验平均N200潜伏期和响应时间的10%之间的线性模型发现了VET被N200潜伏期跟踪的证据，N200潜伏期是NDT的独立于模型的估计。在多种视觉噪声条件下，N200潜伏期与模型估计的NDT之间的斜率为1，表明N200潜伏期跟踪视觉编码的完成和证据积累的开始。N200波形被定位在分布的颞叶和纹外位置的皮质表面，与参与目标刺激的图形-背景分离的分布式网络一致。
Encoding of a sensory stimulus is believed to be the first step in perceptual decision making. Previous research has shown that electrical signals recorded from the human brain track evidence accumulation during perceptual decision making (Gold and Shadlen, 2007; O’Connell et al., 2012; Philiastides et al., 2014). In this study we directly tested the hypothesis that the latency of the N200 recorded by EEG (a negative peak occurring between 150 and 275 ms after stimulus presentation in human participants) reflects the visual encoding time (VET) required for completion of figure-ground segregation before evidence accumulation. We show that N200 latencies vary across individuals, are modulated by external visual noise, and increase response time byxmilliseconds when they increase byxmilliseconds, reflecting a linear regression slope of 1. Simulations of cognitive decision-making theory show that variation in human response times not related to evidence accumulation (non-decision time; NDT), including VET, are tracked by the fastest response times. Evidence that VET is tracked by N200 latencies was found by fitting a linear model between trial-averaged N200 latencies and the 10th percentiles of response times, a model-independent estimate of NDT. Fitting a novel neuro-cognitive model of decision making also yielded a slope of 1 between N200 latency and model-estimated NDT in multiple visual noise conditions, indicating that N200 latencies track the completion of visual encoding and the onset of evidence accumulation. The N200 waveforms were localized to the cortical surface at distributed temporal and extrastriate locations, consistent with a distributed network engaged in figure-ground segregation of the target stimulus.
登录
查看更多内容
将西蒙任务中的理论决策机制与电生理数据联系起来：基于模型的人类神经科学研究
影响因子：
3.2
作者：
Mathieu Servant;C. White;A. Montagnini;B. Burle
通讯作者：
B. Burle
APA 心理学研究方法手册，第 1 卷：基础、规划、测量和心理测量学。
DOI：
--
发表时间：
2012
期刊：
影响因子：
--
作者：
H. Cooper;P. Camic;D. Long;A. Panter;D. Rindskopf;K. Sher
通讯作者：
K. Sher
影响因子：
3.7
作者：
Vogel, EK;Luck, SJ
通讯作者：
Luck, SJ
DOI：
--
发表时间：
2018
期刊：
影响因子：
--
作者：
U. Boehm;Jeffrey Annis;M. Frank;Guy E. Hawkins;A. Heathcote;David Kellen;Angelos;Veronika Lerche;G. Logan;T. Palmeri
通讯作者：
T. Palmeri
DOI：
10.1364/josaa.2.001124
发表时间：
1985-01-01
影响因子：
1.9
作者：
WEBSTER, MA;DEVALOIS, RL
通讯作者：
DEVALOIS, RL