The contingent negative variation (CNV) is a negative slow surface potential, as measured by electroencephalography (EEG), that occurs during the period between a warning stimulus or signal and an imperative ("go") stimulus.

An event-related potential (ERP) is the measured brain response that is the direct result of a specific sensory, cognitive, or motor event. [1] More formally, it is any stereotyped electrophysiological response to a stimulus.

目前我们所知的ERP的基本成分是科学家从 EEG 中研究心理活动的成果，ERP的基本成分是出现条件比较明确、与心理因素的关系比较清楚且可以作为工具使用的成分。 包括伴随性负波（contngent negative variation， CNV）、运动相关电位（BSP 、 MP 、 RAF）、偏侧预备电位（LRP）、 P300 、失匹配负波（MMN）、加工负波（PN）、 N400 、识别电位（RP）、错误相关成分（ERN 、 Pe 、 FN）、视觉 C1 和 P1 、视觉N2等。 ERP特定与某个“事件”（给被试 …

2017年12月1日 · CNV is a common marker of voluntary and automatic expectancy implementation. Distinct cortical networks support voluntary and automatic temporal orienting. A main distinction has been proposed between voluntary and automatic mechanisms underlying temporal orienting (TO) of selective attention.

Contingent Negative Variation (CNV) is a slow negative deflection in the scalp-recorded electroencephalogram (EEG) that occurs when an action or stimulus is contingent on a preceding stimulus, associated with expectancy, anticipation, and …

Contingent negative variation (CNV) is a negative cortical wave that precedes a pre‐cued imperative stimulus requiring a quick motor response. It has been related to motor preparation and anticipatory attention.

Many of the CNV results could be viewed as being consistent with an “oscillator” process if one makes the following assumptions: (1) Scalp detected event-related potential (ERP) components, like the CNV, reflect postsynaptic potentials (PSPs) synchronized across …

The present study focuses on determining the temporal reliability of ERP measures derived from a visual Go-NoGo paradigm, a cognitive task commonly used to elicit the contingent negative variation (CNV).

In this study, we investigated the effects of combined cognitive training on intention-based and stimulus-based actions in older adults using event-related potentials (ERPs). A total of 26 healthy older adults (16 in the training group and 10 in the control group) participated in the study.

The Contingent Negative Variation (CNV) consists of slow negative potentials that depend on the association or contingency of preparatory and imperative stimuli during a warned reaction task requiring a response (Tecce, 1972). The CNV is classified into early and late components. The early CNV (eCNV) relates to