同等与不一致的干扰器定位对感知决策过程中的电生理信号的影响
Jaeger Wongtrakun1, Shou-Han Zhou1,2, Mark A Bellgrove1
1School of Psychological Sciences, Monash University, Melbourne, 3800 Victoria, Australia.
概括
空间不相称的干扰因子通过影响早期的感官处理和证据积累来减缓感知决策,影响关键的神经信号,如中心对面阳性 (CPP) 和N2逆侧 (N2c). 这揭示了分心器的放置如何影响决策动态.
科学领域:
- 认知神经科学 认知神经科学
- 神经科学是一个神经科学.
- 心理学 心理学 心理学
背景情况:
- 感知决策依赖于积累证据,由神经信号跟踪,如中心侧阳性 (CPP).
- 视觉目标选择,包括像N2抵押品 (N2c) 这样的信号,也会影响决策过程.
- 干扰器空间布局对这些神经机制的影响尚不清楚.
研究的目的:
- 调查分心器空间一致性 (相对于目标的相同与不同的半场) 如何影响感知决策.
- 检查分心器对目标选择和证据积累的神经标记物的影响.
主要方法:
- 在人类参与者中使用脑电图 (EEG) 来记录大脑活动.
- 参与者执行了一个感知决策任务,使用不同的分心器空间一致性.
- 漂移扩散建模应用于行为和电生理学数据.
主要成果:
- 与空间不一致的分心因子相比,与一致的分心因子相比,感知决策的速度更慢.
- 对于不一致的分心器,N2c峰幅和CPP斜率被减少.
- 漂移扩散建模表明一致性效应影响了非决策时间,并且发生在处理的早期.
结论:
- 空间不相称的分心因素通过影响早期的感官处理和随后的证据积累,损害了感知决策.
- 这些发现强调了分心器空间配置在调节选择神经动态中的关键作用.
- 这项研究提供了关于外部刺激如何与内部决策过程相互作用的见解.
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