Exploring the Electrophysiological Correlates of the Continued Influence Effect of Misinformation

2018 ◽  
Author(s):  
Christopher Brydges ◽  
Andrew Gordon ◽  
Ullrich K. H. Ecker
Keyword(s):  
Time Window ◽  
Region Of Interest ◽  
Event Related Potentials ◽  
Long Term Memory ◽  
Influence Effect ◽  
Behavioural Research ◽  
Related Potentials ◽  
Underlying Mechanisms

Misinformation often affects inferences and judgments even after it has been retracted. This is known as the continued influence effect (CIE). Previous behavioural research into the effect’s underlying mechanisms has focussed on the role of long-term memory processes at the time misinformation is retrieved during inferential reasoning and judgments. We present the first investigation into the CIE using event-related potentials (ERPs). Participants (N = 47) completed a continued-influence task whilst electroencephalographic data were recorded. Analysis was guided by previous ERP research investigating the effects of post-event misinformation. The ERP elicited at a left parieto-occipital region of interest was significantly more positive for incorrectly accepted retracted misinformation than correctly accepted true information at a late (800-900 ms) time window. This suggests that post-retraction reliance on misinformation is driven by particularly strong recollection of the misinformation, ostensibly following poor integration of the retraction into the initial, partially invalid mental model.

scholarly journals Semantic Congruence Drives Long-Term Memory and Similarly Affects Neural Retrieval Dynamics in Young and Older Adults

2021 ◽  
Vol 13 ◽  
Author(s):  
Ricardo J. Alejandro ◽  
Pau A. Packard ◽  
Tineke K. Steiger ◽  
Lluis Fuentemilla ◽  
Nico Bunzeck
Keyword(s):  
Recognition Memory ◽  
Healthy Aging ◽  
Time Window ◽  
Age Groups ◽  
Event Related Potentials ◽  
Long Term Memory ◽  
Term Memory ◽  
Related Potentials ◽  
Semantic Congruence

Learning novel information can be promoted if it is congruent with already stored knowledge. This so-called semantic congruence effect has been broadly studied in healthy young adults with a focus on neural encoding mechanisms. However, the impacts on retrieval, and possible impairments during healthy aging, which is typically associated with changes in declarative long-term memory, remain unclear. To investigate these issues, we used a previously established paradigm in healthy young and older humans with a focus on the neural activity at a final retrieval stage as measured with electroencephalography (EEG). In both age groups, semantic congruence at encoding enhanced subsequent long-term recognition memory of words. Compatible with this observation, semantic congruence led to differences in event-related potentials (ERPs) at retrieval, and this effect was not modulated by age. Specifically, congruence modulated old/new ERPs at a fronto-central (Fz) and left parietal (P3) electrode in a late (400–600 ms) time window, which has previously been associated with recognition memory processes. Importantly, ERPs to old items also correlated with the positive effect of semantic congruence on long-term memory independent of age. Together, our findings suggest that semantic congruence drives subsequent recognition memory across the lifespan through changes in neural retrieval processes.

Predictive Pre-updating and Working Memory Capacity: Evidence from Event-related Potentials

2018 ◽  
Vol 30 (12) ◽  
pp. 1916-1938 ◽  
Author(s):  
Tal Ness ◽  
Aya Meltzer-Asscher
Keyword(s):  
Working Memory ◽  
Cognitive Neuroscience ◽  
Opposite Effect ◽  
Working Memory Capacity ◽  
Event Related Potentials ◽  
Memory Capacity ◽  
Long Term Memory ◽  
Single Word ◽  
Related Potentials

It was recently proposed that lexical prediction in sentence context encompasses two qualitatively distinct prediction mechanisms: “pre-activation,” namely, activating representations stored in long-term memory, and “pre-updating,” namely, updating the sentence's representation, built online in working memory (WM), to include the predicted content [Lau, E. F., Holcomb, P. J., & Kuperberg, G. R. Dissociating N400 effects of prediction from association in single-word contexts. Journal of Cognitive Neuroscience, 25, 484–502, 2013]. The current study sought to find evidence for pre-updating and test the influence of individual differences in WM capacity on the tendency to engage in this process. Participants read strongly and weakly constraining sentences. ERPs were measured on the predictable noun as well as on the preceding verb, where the prediction is generated. Increased P600 amplitude was observed at the verb in the strongly constraining sentences, reflecting integration of the predicted upcoming argument, thus providing evidence for pre-updating. This effect was greater for participants with higher WM capacity, indicating that the tendency to engage in pre-updating is highly affected by WM capacity. The opposite effect was observed at the noun, that is, for participants with higher WM span, a greater decrease in P600 amplitude in the strongly constraining sentences was observed, indicating that the integration of a pre-updated word was easier. We discuss these results in light of previous literature and propose a plausible architecture to account for the interplay between pre-activation and pre-updating, mediating the influence of factors such as WM capacity.

scholarly journals Propofol and Midazolam Inhibit Conscious Memory Processes Very Soon after Encoding: An Event-related Potential Study of Familiarity and Recollection in Volunteers

2009 ◽  
Vol 110 (2) ◽  
pp. 295-312 ◽  
Author(s):  
Robert A. Veselis ◽  
Kane O. Pryor ◽  
Ruth A. Reinsel ◽  
Yuelin Li ◽  
Meghana Mehta ◽  
...  
Keyword(s):  
Memory Function ◽  
Recognition Task ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
Long Term Memory ◽  
Memory Retention ◽  
Drug Infusion ◽  
Term Memory ◽  
Related Potentials

Background Intravenous drugs active via gamma-aminobutyric acid receptors to produce memory impairment during conscious sedation. Memory function was assessed using event-related potentials (ERPs) while drug was present. Methods The continuous recognition task measured recognition of photographs from working (6 s) and long-term (27 s) memory while ERPs were recorded from Cz (familiarity recognition) and Pz electrodes (recollection recognition). Volunteer participants received sequential doses of one of placebo (n = 11), 0.45 and 0.9 microg/ml propofol (n = 10), 20 and 40 ng/ml midazolam (n = 12), 1.5 and 3 microg/ml thiopental (n = 11), or 0.25 and 0.4 ng/ml dexmedetomidine (n = 11). End-of-day yes/no recognition 225 min after the end of drug infusion tested memory retention of pictures encoded on the continuous recognition tasks. Results Active drugs increased reaction times and impaired memory on the continuous recognition task equally, except for a greater effect of midazolam (P < 0.04). Forgetting from continuous recognition tasks to end of day was similar for all drugs (P = 0.40), greater than placebo (P < 0.001). Propofol and midazolam decreased the area between first presentation (new) and recognized (old, 27 s later) ERP waveforms from long-term memory for familiarity (P = 0.03) and possibly for recollection processes (P = 0.12). Propofol shifted ERP amplitudes to smaller voltages (P < 0.002). Dexmedetomidine may have impaired familiarity more than recollection processes (P = 0.10). Thiopental had no effect on ERPs. Conclusion Propofol and midazolam impaired recognition ERPs from long-term memory but not working memory. ERP measures of memory revealed different pathways to end-of-day memory loss as early as 27 s after encoding.

Event-Related Potentials as Indices of Time Processing: A Review

2004 ◽  
Vol 18 (2/3) ◽  
pp. 89-104 ◽  
Author(s):  
Françoise Macar ◽  
Franck Vidal
Keyword(s):  
Event Related Potentials ◽  
Brain Regions ◽  
Long Term Memory ◽  
Time Processing ◽  
Topographic Features ◽  
Accumulation Mechanism ◽  
Related Potentials ◽  
Temporal Encoding ◽  
On Line

Abstract This review examines ERP data that document the mechanisms and neural bases of time processing in the millisecond-to-minute range. Several types of ERP attest to the existence of timing capacities. Among them, one component of the Contingent Negative Variation (CNV) provides an on-line index of timing. CNV data strengthen the temporal accumulator concept, designed to subtend duration encoding. This conclusion is based on four main results: The positive relationship between temporal estimates and CNV amplitude is an index of the accumulation mechanism; the CNV peak is an index of time-based decision making; the CNV relates to temporal encoding, whereas temporal long-term memory may be linked to shifts of positive polarity; learning effects on CNV amplitude depend on topographic features, thus revealing functional differences among brain regions with respect to timing.

scholarly journals Electrocortical Evidence for Impaired Affective Picture Processing after Long-Term Immobilization

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Katharina Brauns ◽  
Anika Werner ◽  
Hanns-Christian Gunga ◽  
Martina A. Maggioni ◽  
David F. Dinges ◽  
...  
Keyword(s):  
Physical Inactivity ◽  
Event Related Potentials ◽  
Bed Rest ◽  
Control Group ◽  
Picture Processing ◽  
Long Duration ◽  
Related Potentials ◽  
Time Frames

Abstract The neurobehavioral risks associated with spaceflight are not well understood. In particular, little attention has been paid on the role of resilience, social processes and emotion regulation during long-duration spaceflight. Bed rest is a well-established spaceflight analogue that combines the adaptations associated with physical inactivity and semi-isolation and confinement. We here investigated the effects of 30 days of 6 degrees head-down tilt bed rest on affective picture processing using event-related potentials (ERP) in healthy men. Compared to a control group, bed rest participants showed significantly decreased P300 and LPP amplitudes to pleasant and unpleasant stimuli, especially in centroparietal regions, after 30 days of bed rest. Source localization revealed a bilateral lower activity in the posterior cingulate gyrus, insula and precuneus in the bed rest group in both ERP time frames for emotional, but not neutral stimuli.

scholarly journals Behavioral and neural evidence of enhanced long-term memory for untrustworthy faces

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Mathias Weymar ◽  
Carlos Ventura-Bort ◽  
Julia Wendt ◽  
Alexander Lischke
Keyword(s):  
Daily Life ◽  
Memory Task ◽  
Event Related Potentials ◽  
Long Term Memory ◽  
Potential Harm ◽  
Term Memory ◽  
Related Potentials ◽  
Study Participants ◽  
Fast Access

AbstractIn daily life, we automatically form impressions of other individuals on basis of subtle facial features that convey trustworthiness. Because these face-based judgements influence current and future social interactions, we investigated how perceived trustworthiness of faces affects long-term memory using event-related potentials (ERPs). In the current study, participants incidentally viewed 60 neutral faces differing in trustworthiness, and one week later, performed a surprise recognition memory task, in which the same old faces were presented intermixed with novel ones. We found that after one week untrustworthy faces were better recognized than trustworthy faces and that untrustworthy faces prompted early (350–550 ms) enhanced frontal ERP old/new differences (larger positivity for correctly remembered old faces, compared to novel ones) during recognition. Our findings point toward an enhanced long-lasting, likely familiarity-based, memory for untrustworthy faces. Even when trust judgments about a person do not necessarily need to be accurate, a fast access to memories predicting potential harm may be important to guide social behaviour in daily life.

scholarly journals The congruence effect is impaired in healthy aging: a relationship to event-related potentials and theta-alpha oscillations

2018 ◽  
Author(s):  
Pau A. Packard ◽  
Tineke K. Steiger ◽  
Lluis Fuentemilla ◽  
Nico Bunzeck
Keyword(s):  
Semantic Processing ◽  
Healthy Aging ◽  
Event Related Potentials ◽  
Long Term Memory ◽  
Congruence Effect ◽  
Term Memory ◽  
Alpha Oscillations ◽  
Age Related ◽  
Related Potentials

AbstractLong-term memory can improve when incoming information is congruent with known semantic information. This so-called congruence effect has widely been shown in younger adults but age-related changes and neural mechanisms remain unclear. Here, congruence improved recognition memory in younger and older adults (i.e. congruency effect), but – importantly – this effect decreased with age. Electroencephalography data show that, in both groups, congruence led to widespread differences in event-related potentials (ERPs) and alpha-beta oscillations (8-30 Hz), known to support semantic processing. Importantly, these ERP differences predicted increases in memory performance, especially for congruent items. Finally, age-related differences in memory were accompanied by a positive ERP and later decrease in theta-alpha (5-13 Hz) during encoding, which were greater in the younger group. Together, although semantic congruence generally increases long-term memory, the effect is less pronounced in the elderly. At the neural level, theta-alpha oscillations, previously linked to memory and attentional processes, provide a mechanistic explanation for such an age-related effect.

Sign in / Sign up

Export Citation Format

Share Document