Neural Correlates of Feedback Processing in Visuo-Tactile Crossmodal Paired-Associate Learning

Abstract

Previous studies have examined the neural correlates for crossmodal paired-associate (PA) memory and the temporal dynamics of its formation. However, the neural dynamics for feedback processing of crossmodal PA learning remain unclear. To examine this process, we recorded event-related scalp electrical potentials for PA learning of unimodal visual-visual pairs and crossmodal visual-tactile pairs when participants performed unimodal and crossmodal tasks. We examined event-related potentials (ERPs) after the onset of feedback in the tasks for three effects: feedback type (positive feedback vs. negative feedback), learning (as the learning progressed) and the task modality (crossmodal vs. unimodal). The results were as follows: (1) feedback type: the amplitude of P300 decreased with incorrect trials and the P400/N400 complex was only present in incorrect trials; (2) learning: progressive positive voltage shifts in frontal recording sites and negative voltage shifts in central and posterior recording sites were identified as learning proceeded; and (3) task modality: compared with the unimodal PA learning task, positive voltage shifts in frontal sites and negative voltage shifts in posterior sites were found in the crossmodal PA learning task. To sum up, these results shed light on cortical excitability related to feedback processing of crossmodal PA learning.

Improving Visual Working Memory With Training on a Tactile Orientation Sequence Task in Humans

“…It is become clear that perception, behavior, and cognition in human subjects can be systematically improved by training tasks (Ball et al, 2002; Jaeggi et al, 2008; Vecchi & Cornoldi, 1999). Previous studies have adopted many different experimental paradigms to train tactile working memory (Gui et al, 2018; Leo et al, 2018). Based on the advantages of sequential processing for the tactile modality, most tasks, such as the N-back and delayed-match tasks, adopt a sequential mode of presentation (Dehghan Nayyeri et al, 2019; Gui et al, 2017).…”

An EEG Dataset of Neural Signatures in a Competitive Two-Player Game Encouraging Deceptive Behavior

“…The ensuing P400, identifiable by a positive deflection at frontal recording sites and a negative one at posterior sites, peaks around 400 ms post-feedback onset and was more pronounced in the loss condition. This P400 component has been linked to the processes of updating and memorizing information 45 . In the context of our study, this suggests observers were actively monitoring game scores to ensure a win in the game.…”