Аннотация:This study presents the results of the analysis of error-related potentials' (ErrPs) variability in different preceding stimuli contexts of error. Significant differences in agreement and disagreement reactions associated with different error contexts were found. This further demonstrates the relationship of ErrPs to cognitive control and reward tracking systems. The findings are important for the development of brain-computer interfaces (BCIs) where ErrPs can serve as a validating factor or a major factor in interaction with the system.