scholarly journals Cue overlap supports preretrieval selection in episodic memory: ERP evidence

2021 ◽  
Author(s):  
Arianna Moccia ◽  
Alexa M. Morcom
Keyword(s):  
Episodic Memory ◽  
Event Related Potentials ◽  
Memory Test ◽  
Retrieval Cues ◽  
Line Drawings ◽  
Memory Traces ◽  
Data Support ◽  
External Cues ◽  
Related Potentials

AbstractPeople often want to recall events of a particular kind, but this selective remembering is not always possible. We contrasted two candidate mechanisms: the overlap between retrieval cues and stored memory traces, and the ease of recollection. In two preregistered experiments (Ns = 28), we used event-related potentials (ERPs) to quantify selection occurring before retrieval and the goal states — retrieval orientations — thought to achieve this selection. Participants viewed object pictures or heard object names, and one of these sources was designated as targets in each memory test. We manipulated cue overlap by probing memory with visual names (Experiment 1) or line drawings (Experiment 2). Results revealed that regardless of which source was targeted, the left parietal ERP effect indexing recollection was selective when test cues overlapped more with the targeted than non-targeted information, despite consistently better memory for pictures. ERPs for unstudied items also were more positive-going when cue overlap was high, suggesting that engagement of retrieval orientations reflected availability of external cues matching the targeted source. The data support the view that selection can act before recollection if there is sufficient overlap between retrieval cues and targeted versus competing memory traces.

scholarly journals Selective remembering: Cue overlap enables pre-retrieval control of recollection

2021 ◽  
Author(s):  
Arianna Moccia ◽  
Alexa M. Morcom
Keyword(s):  
Behavioral Control ◽  
Working Memory Capacity ◽  
High Capacity ◽  
Event Related Potentials ◽  
Retrieval Cues ◽  
Line Drawings ◽  
Memory Traces ◽  
Wide Range ◽  
Related Potentials ◽  
Past Experiences

AbstractPeople often want to recall only currently relevant events, but this selective remembering is not always possible. We contrasted two candidate mechanisms: the overlap between retrieval cues and stored memory traces, and the ease of recollection. In two preregistered experiments (Ns = 28) we quantified recollection of targeted over non-targeted information using event-related potentials (ERPs). Participants viewed objects or heard object names, and one of these sources was designated as targets in each memory test. We manipulated cue overlap by probing memory with visual names (Experiment 1) or line drawings (Experiment 2). Results revealed that regardless of which source was targeted, the left parietal ERP effect was selective when test cues overlapped more with targeted than non-targeted information, despite consistently better memory for pictures. The data support the view that selection can act prior to recollection if there is sufficient overlap between retrieval cues and targeted versus competing memory traces.Statement of relevanceThe ability to select relevant over irrelevant information from memory allows us to draw effectively on our past experiences. This ability is critical for behavioral control in a wide range of tasks and may account for reduced control in different populations. For example, people with lower working memory capacity and younger adults remember less selectively than those with high capacity and older adults. External cues like photographs can be strong memory triggers, but relatively little is known about how cues interact with our goals to select what is remembered. One priority is establishing that this selection acts prior to the point of retrieval, rather than post-retrieval. Cognitive control is assumed to act at both stages, but they are difficult to separate using behavioral measures alone. Here, we used electroencephalographic event-related potentials (ERPs) to show that cue overlap enables selection prior to recollection, as predicted by the encoding specificity principle.

Electrophysiological Evidence for the Modulation of Retrieval Orientation by Depth of Study Processing

2000 ◽  
Vol 12 (4) ◽  
pp. 664-678 ◽  
Author(s):  
Michael D. Rugg ◽  
Kevin Allan ◽  
Claire S. Birch
Keyword(s):  
Recognition Memory ◽  
Brain Activity ◽  
Memory Search ◽  
Event Related Potentials ◽  
Memory Test ◽  
Retrieval Cues ◽  
New Words ◽  
Study Task ◽  
Retrieval Orientation ◽  
Related Potentials

Event-related potentials (ERPs) were employed to investigate whether brain activity elicited by retrieval cues in a memory test varies according to the encoding task undertaken at study. Two recognition memory test blocks were administered, preceded, in one case, by a “shallow” study task (alphabetic judgement) and, in the other case, by a “deep” task (sentence generation). ERPs elicited by the new words in each test block differed, the ERPs elicited in the block following the shallow study task exhibiting the more positive-going waveforms. This finding was taken as evidence that subjects adopt different “retrieval sets” when attempting to retrieve items that had been encoded in terms of alphabetic versus semantic attributes. Differences between the ERPs elicited by correctly classified old and new words (old/new effects) also varied with encoding task. The effects for deeply studied words resembled those found in previous ERP studies of recognition memory, whereas old/new effects for shallowly studied words were confined to a late-onsetting, right frontal positivity. Together, the findings indicate that the depth of study processing influences two kinds of memory-related neural activity, associated with memory search operations, and the processing of retrieved information, respectively.

Mind Wandering and Retrieval from Episodic Memory: A Pilot Event-Related Potential Study

2008 ◽  
Vol 102 (3) ◽  
pp. 805-818 ◽  
Author(s):  
Leigh Martin Riby ◽  
Jonathan Smallwood ◽  
Valerie P. Gunn
Keyword(s):  
Episodic Memory ◽  
Memory Task ◽  
Event Related Potentials ◽  
Mind Wandering ◽  
Event Related Potential ◽  
Task Completion ◽  
Low Frequencies ◽  
Line Drawings ◽  
Strategic Processes ◽  
Related Potentials

The present study investigated the effects of mind wandering (task-unrelated thought) on the subcomponents of episodic memory as reflected by event-related potentials (ERPs). Specifically, individual differences in the pattern of ERP episodic ‘old/new’ effects (left-parietal, right-frontal and central-negativity effects) were examined across groups of participants experiencing either high or low frequencies of task-unrelated thought during encoding. Twenty participants studied lists of words and line drawings in one of two contexts (red versus green coloured boxes). At test, participants discriminated between target (old words or line drawings presented in one colour) and nontargets (old items from the other colour and new items). On completion of the memory task, participants completed the ‘thinking’ component of the Dundee Stress State Questionnaire to provide a retrospective measure of task-unrelated thought. Behavioural data indicated that irrespective of the presence of task-unrelated thought, participants were able to complete the memory task equally well. However, an analysis of ERPs across High and Low task-unrelated thought groups revealed differences in retrieval strategy. Those individuals with infrequent episodes of task-unrelated thought at study used a ‘pure’ recollection strategy (left-parietal effect only). Conversely, those participants experiencing frequent episodes of task-unrelated thought were unable to recollect the stimuli with ease, as indexed by a diminished parietal effect. As a consequence, these participants employed additional strategic processes for task completion, as indexed by an elevated amplitude of central negativity effects. These data are consistent with the decoupling hypothesis of mind wandering which suggests impaired recollection when attention becomes directed away from the task.

scholarly journals Not Just a Pot: Visual Episodic Memory in Cannabis Users and Polydrug Cannabis Users: ROC and ERP Preliminary Investigation

2021 ◽  
Vol 15 ◽  
Author(s):  
Alicja Anna Binkowska ◽  
Natalia Jakubowska ◽  
Maciej Gaca ◽  
Natalia Galant ◽  
Agnieszka Piotrowska-Cyplik ◽  
...  
Keyword(s):  
Episodic Memory ◽  
Receiver Operating Characteristic ◽  
Operating Characteristic ◽  
Memory Performance ◽  
Visual Learning ◽  
Linear Regression Analysis ◽  
Memory Task ◽  
Event Related Potentials ◽  
Related Potentials ◽  
Receiver Operating

Background While research has consistently identified an association between long-term cannabis use and memory impairments, few studies have examined this relationship in a polydrug context (i.e., when combining cannabis with other substances).Aims: In this preliminary study, we used event-related potentials to examine the recognition process in a visual episodic memory task in cannabis users (CU) and cannabis polydrug users (PU). We hypothesized that CU and PU will have both–behavioral and psychophysiological–indicators of memory processes affected, compared to matched non-using controls with the PU expressing more severe changes.Methods 29 non-using controls (CG), 24 CU and 27 PU were enrolled into the study. All participants completed a visual learning recognition task while brain electrical activity was recorded. Event-related potentials were calculated for familiar (old) and new images from a signal recorded during a subsequent recognition test. We used receiver operating characteristic curves for behavioral data analysis.Results The groups did not differ in memory performance based on receiver operating characteristic method in accuracy and discriminability indicators nor mean reaction times for old/new images. The frontal old/new effect expected from prior research was observed for all participants, while a parietal old/new effect was not observed. While, the significant differences in the late parietal component (LPC) amplitude was observed between CG and PU but not between CG and CU nor CU and PU. Linear regression analysis was used to examine the mean amplitude of the LPC component as a predictor of memory performance accuracy indicator. LPC amplitude predicts recognition accuracy only in the CG.Conclusion The results showed alterations in recognition memory processing in CU and PU groups compared to CG, which were not manifested on the behavioral level, and were the most prominent in cannabis polydrug users. We interpret it as a manifestation of the cumulative effect of multiple drug usage in the PU group.

scholarly journals A Laboratory Word Memory Test Analogue Differentiates Intentional Feigning from True Responding Using the P300 Event-Related Potential

2019 ◽  
Vol 9 (5) ◽  
pp. 109 ◽  
Author(s):  
John F. Shelley-Tremblay ◽  
Joshua C. Eyer ◽  
Benjamin D. Hill
Keyword(s):  
Cognitive Impairment ◽  
Recognition Task ◽  
Event Related Potentials ◽  
Memory Test ◽  
Event Related Potential ◽  
P300 Amplitude ◽  
Word Memory Test ◽  
Word Memory ◽  
Feigned Cognitive Impairment ◽  
Related Potentials

Symptom exaggeration and feigned cognitive impairment occur commonly in forensic and medicolegal evaluations. As a result, methods to detect feigned cognitive impairment are an indispensable component of neuropsychological assessments. This study reports the results of two neurophysiological experiments using a forced-choice recognition task built from the stimuli of the Word Memory Test and Medical Symptom Validity Test as well as a new linguistically informed stimulus set. Participant volunteers were instructed either to do their best or to feign cognitive impairment consistent with a mild traumatic brain injury while their brain activity was monitored using event-related potentials (ERP). Experiment 1 varied instructions across individuals, whereas Experiment 2 varied instructions within individuals. The target brain component was a positive deflection indicating stimulus recognition that occurs approximately 300 ms after exposure to a stimulus (i.e., the P300). Multimodal comparison (P300 amplitude to behavioral accuracy) allowed the detection of feigned cognitive impairment. Results indicate that, for correct responses, P300s were equivalent for the simulated malingering and good effort conditions. However, for incorrect responses, feigned impairment produced reliable but significantly reduced P300 amplitudes. Although the P300 is an automatic index of recognition—even when knowledge is hidden—its amplitude appears capable of modulation by feigning strategies. Implications of this finding are discussed for research and clinical applications.

How ”Implicit\ Are Implicit Color Effects in Memory?

2002 ◽  
Vol 49 (2) ◽  
pp. 120-131 ◽  
Author(s):  
Hubert D. Zimmer ◽  
Astrid Steiner ◽  
Ullrich K. H. Ecker
Keyword(s):  
Episodic Memory ◽  
Implicit Memory ◽  
Choice Test ◽  
Study Phase ◽  
Implicit Test ◽  
Color Information ◽  
Explicit Test ◽  
Line Drawings ◽  
Memory Traces ◽  
Specific Object

Abstract. Processing colored pictures of objects results in a preference to choose the former color for a specific object in a subsequent color choice test ( Wippich & Mecklenbräuker, 1998 ). We tested whether this implicit memory effect is independent of performances in episodic color recollection (recognition). In the study phase of Experiment 1, the color of line drawings was either named or its appropriateness was judged. We found only weak implicit memory effects for categorical color information. In Experiment 2, silhouettes were colored by subjects during the study phase. Performances in both the implicit and the explicit test were good. Selections of ”old\ colors in the implicit test, though, were almost completely confined to items for which the color was also remembered explicitly. In Experiment 3, we applied the opposition technique in order to check whether we could find any implicit effects regarding items for which no explicit color recollection was possible. This was not the case. We therefore draw the conclusion that implicit color preference effects are not independent of explicit recollection, and that they are probably based on the same episodic memory traces that are used in explicit tests.

Event-related potentials (ERPs) in a learning and memory test

1986 ◽  
Vol 23 (1) ◽  
pp. 1-20 ◽  
Author(s):  
Sirkka Mäntysalo ◽  
Anthony W.K. Gaillard
Keyword(s):  
Learning And Memory ◽  
Event Related Potentials ◽  
Memory Test ◽  
Related Potentials

scholarly journals Effects of Age on the Neural Correlates of Retrieval Cue Processing are Modulated by Task Demands

2009 ◽  
Vol 21 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Sandrine Duverne ◽  
Shahab Motamedinia ◽  
Michael D. Rugg
Keyword(s):  
Recognition Task ◽  
Event Related Potentials ◽  
Retrieval Task ◽  
Retrieval Cues ◽  
Test Items ◽  
Study Material ◽  
Related Potentials ◽  
Study Test ◽  
Young Subjects ◽  
Cue Processing

The electrophysiological correlates of retrieval orientation—the differential processing of retrieval cues according to the nature of the sought-for information—were investigated in healthy young (18–20 years old) and older (63–77 years old) adults. In one pair of study–test cycles, subjects studied either words or pictures presented in one of two visually distinct contexts, and then performed a yes/no recognition task with words as test items. In another pair of study–test cycles, subjects again made recognition judgments, but were required, in addition, to signal the study context for each item judged “old.” Young subjects' event-related potentials (ERPs) for new (unstudied) test items were more negative-going when the study material was pictures rather than words, and this effect varied little between the two retrieval tasks. Replicating a previous report [Morcom, A. M., & Rugg, M. D. Effects of age on retrieval cue processing as revealed by ERPs. Neuropsychologia, 42, 1525–1542, 2004], the effects of study material on the ERPs of the older subjects were attenuated and statistically nonsignificant in the recognition task. In the source retrieval task, however, material effects in the older group were comparable in both onset latency and magnitude with those of the young subjects. Thus, the failure of older adults to demonstrate differential cue processing in tests of recognition memory likely reflects the adoption of a specific retrieval strategy rather than the incapacity to process retrieval cues in a goal-directed manner.

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