与前额外维度变化相关的激活在稀疏和密集显示器中的视觉搜索中不同
Nico Marek1, Ninja K Horr1, Dragan Rangelov2
1Department of Experimental Psychology, Institute of Psychology, Otto-von-Guericke University, Magdeburg, Germany.
Neuropsychologia
|January 2, 2025
概括
显示密度会影响大脑如何处理视觉搜索中的变化. 稀疏显示器激活右侧前极皮质,而密集显示器激活左侧,揭示不同的神经过程.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 视觉感知 视觉感知 视觉感知
背景情况:
- 前额前皮层激活随着目标定义特征尺寸的变化而增加.
- 之前的研究主要观察到这种激活在左侧前极性皮质.
- 存在差异,其中一项研究报告了使用稀疏显示的右前前额前部激活.
研究的目的:
- 调查显示密度是否影响注意力维度变化期间前额前皮层激活的横向性.
- 在高效 (密集) 和低效 (稀疏) 的视觉搜索中探索不同的神经过程.
主要方法:
- 参与者使用密集和稀疏的显示器执行视觉搜索任务.
- 在定义目标的特征维度变化期间,对前额前皮层的大脑活动进行了监测.
- 功能磁共振成像 (fMRI) 或脑电图 (EEG) 可能用于测量大脑活化.
主要成果:
- 目标定义特征维度的变化在稀疏显示搜索过程中选择性地激活了右前极皮质.
- 在密集的显示搜索过程中,在左侧前极皮层观察到相反的模式.
- 这表明显示密度调节了维度变化检测的神经相关性.
结论:
- 不同的神经过程是稀疏和密集显示的视觉搜索的基础.
- 前额前皮层激活的横向性取决于显示密度.
- 这解决了先前关于维度变化相关激活的发现中的明显差异.
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