2020年9月1日 · The late positive potential (LPP) is an ERP component which provides a neural measure of emotional processing (Hajcak et al., 2012). It indexes sustained attention towards motivationally salient stimuli that can be reliably assessed across development, from early childhood ( Hua et al., 2014 ), through adolescence ( Kujawa et al., 2013 ) and ...

The late positive component or late positive complex (LPC) is a positive-going event-related brain potential (ERP) component that has been important in studies of explicit recognition memory. [1][2] It is generally found to be largest over parietal scalp sites (relative to reference electrodes placed on the mastoid processes), beginning around 4...

2022年6月1日 · The late positive potential (LPP) is a positive-going deflection in the ERP waveform that begins approximately 400 ms after stimulus onset. It is larger for emotional compared to neutral stimuli, and appears to be sensitive primarily to arousal level rather than valence (Cuthbert et al., 2000; Hajcak and Foti, 2020).

2023年10月1日 · Although emotion can impact many ERP components, the component most consistently modulated by emotion is the late positive potential (LPP). The LPP is a positive deflection in the ERP beginning around 400 milliseconds and lasting a few hundred milliseconds or more (both the onset and duration vary with type of stimulus and task demands).

2012年2月26日 · The late positive potential (LPP) is an event-related potential (ERP) component over visual cortical areas that is modulated by the emotional intensity of a stimulus. However, the functional significance of this neural modulation remains elusive.

后期正成分（lpp）的特征是在刺激后约400-500毫秒开始出现，并持续几百毫秒。其他相关的erp也包括慢波（sw）和后期正分量（lpc）。lpp与识别记忆，情感处理和信息的重新评估有关。lpp增强可以通过自上而下的调节策略来减弱，例如抑制和重新评估。

2015年5月20日 · We found that the effects of stress on the LPP ERP emotion measure were time sensitive. Specifically, the LPP ERP was only altered in the late time-point (30-40 min post-stress) when cortisol was at its highest level. Here, the LPP no longer discriminated between the emotional and non-emotional picture categories, most likely because neutral ...

2012年10月17日 · A key feature observed in ERPs evoked by emotionally engaging stimuli is the late positive potential (LPP), which is characterized by an amplitude enhancement for pleasant and unpleasant stimuli, relative to neutral stimuli, and has a centroparietal maximum topography.

Scalp-recorded event-related potentials (ERPs), because of their excellent temporal resolution (on the order of milliseconds), are particularly well-suited to measuring rapid affective and cognitive processes associated with emotion regulation.

2021年7月30日 · 事件相关晚期正电位（LPP）是中潜伏期视觉ERP成分，是情绪ERP研究的主要关注成分之一. LPP在刺激呈现后的300ms变得明显，并且相比于中性条件，正性和负性图片刺激均能诱发更明显的LPP。。 P300家族. P3b. 在300ms左右出现的正波。