Effects of parietal exogenous oscillatory field potentials on subjectively perceived memory confidence.

Effects of parietal exogenous oscillatory field potentials on subjectively perceived memory confidence. Neurobiol Learn Mem. 2019 Dec 13;:107140 Authors: Wynn SC, Kessels RPC, Schutter DJLG Abstract Previous research has suggested involvement of parietal theta (3-7 Hz) power in subjectively perceived memory confidence during retrieval. To obtain further insights into the role of parietal theta activity during retrieval in processes associated with performance and confidence, fifty-four healthy volunteers performed a recognition memory task in a within-subject transcranial alternating current stimulation (tACS) study. Participants encoded a subset of words at specific on-screen locations. During the retrieval phase accuracy and subjectively perceived confidence on item and source memory were evaluated while administering exogenous alternating field potentials. Results showed that 3.5 Hz tACS decreased subjectively perceived memory confidence as compared to sham and 8 Hz tACS. No tACS effects were found on accuracy regarding item and source memory. Our findings suggest that theta activity in the parietal cortex is involved in subjective perceived confidence in word recognition. PMID: 31843652 [PubMed - as supplied by publisher]
Source: Neurobiology of Learning and Memory - Category: Neurology Authors: Tags: Neurobiol Learn Mem Source Type: research