反转和固定位置对人脸和房屋刺激处理的影响--大规模单变量分析。

IF 2.3 3区 医学 Q3 CLINICAL NEUROLOGY
Brain Topography Pub Date : 2024-11-01 Epub Date: 2024-07-23 DOI:10.1007/s10548-024-01068-w
James Siklos-Whillans, Roxane J Itier
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引用次数: 0

摘要

大多数研究视觉加工时间过程的事件相关电位研究主要集中在 N170 分量上。刺激方向会影响人脸的 N170 波幅,但不会影响物体的 N170 波幅,这一发现被解释为反映了人脸的整体/构型加工和物体的特征加工。此外,虽然最近的研究表明,人们在面部的固定位置会影响 N170,但尚未对物体的固定位置效应进行研究。我们使用数据驱动的大规模单变量分析(所有时间点和电极)来研究反转和固定位置效应对人脸和房屋神经加工的时间过程。研究发现,在刺激开始后 100-350 毫秒内,人脸和房屋都存在强烈而广泛的方位效应,包括 P1 和 N170 成分,以及之后的成分,这一发现证明房屋缺乏整体处理。虽然对房屋没有发现明显的固定效应,但固定位置在早期对人脸处理有很大影响,反映了 C2 和 P1 成分周围以及 N170-P2 间期的视网膜映射。面孔倒置效应在 120 毫秒左右的鼻孔固定时也是最大的。这些结果支持这样一种观点,即面部特征整合(1)取决于被固定的特征以及其他特征在视野中的位置;(2)当固定在外侧时,在 P1-N170 间期发生最大化;(3)持续超过 200 毫秒。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effects of Inversion and Fixation Location on the Processing of Face and House Stimuli - A Mass Univariate Analysis.

Effects of Inversion and Fixation Location on the Processing of Face and House Stimuli - A Mass Univariate Analysis.

Most Event Related Potential studies investigating the time course of visual processing have focused mainly on the N170 component. Stimulus orientation affects the N170 amplitude for faces but not for objects, a finding interpreted as reflecting holistic/configural processing for faces and featural processing for objects. Furthermore, while recent studies suggest where on the face people fixate impacts the N170, fixation location effects have not been investigated in objects. A data-driven mass univariate analysis (all time points and electrodes) was used to investigate the time course of inversion and fixation location effects on the neural processing of faces and houses. Strong and widespread orientation effects were found for both faces and houses, from 100-350ms post-stimulus onset, including P1 and N170 components, and later, a finding arguing against a lack of holistic processing for houses. While no clear fixation effect was found for houses, fixation location strongly impacted face processing early, reflecting retinotopic mapping around the C2 and P1 components, and during the N170-P2 interval. Face inversion effects were also largest for nasion fixation around 120ms. The results support the view that facial feature integration (1) depends on which feature is being fixated and where the other features are situated in the visual field, (2) occurs maximally during the P1-N170 interval when fixation is on the nasion and (3) continues past 200ms, suggesting the N170 peak, where weak effects were found, might be an inflexion point between processes rather than the end of a feature integration into a whole process.

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来源期刊
Brain Topography
Brain Topography 医学-临床神经学
CiteScore
4.70
自引率
7.40%
发文量
41
审稿时长
3 months
期刊介绍: Brain Topography publishes clinical and basic research on cognitive neuroscience and functional neurophysiology using the full range of imaging techniques including EEG, MEG, fMRI, TMS, diffusion imaging, spectroscopy, intracranial recordings, lesion studies, and related methods. Submissions combining multiple techniques are particularly encouraged, as well as reports of new and innovative methodologies.
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