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Interference and Decay

Interference and Decay

Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...

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Related Experiment Video

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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

Published on: July 16, 2015

Event-related potential correlates of interference effects on recognition memory.

Kenneth A Norman¹, Katharine Tepe, Erika Nyhus

¹Department of Psychology, Princeton University, Princeton, New Jersey 08540, USA. knorman@princeton.edu

Psychonomic Bulletin & Review

|July 9, 2008

Summary

New learning impacts memory, but neuroimaging studies are rare. This study used event-related potentials (ERPs) to show list strength selectively impairs recollection, supporting the complementary learning systems (CLS) model.

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Dissociation of the Confounding Influences of Expectancy and Integrative Difficulty Residing in Anomalous Sentences in Event-related Potential Studies

Published on: May 9, 2019

Area of Science:

Cognitive Neuroscience
Neuroscience
Psychology

Background:

Episodic memory interference, where new learning affects prior knowledge, is a key theoretical issue.
Human neuroimaging studies investigating memory interference are limited.
The complementary learning systems (CLS) model offers predictions for how learning affects memory consolidation.

Purpose of the Study:

To test the CLS model's predictions regarding memory interference.
To investigate the effects of list strength manipulation on recognition memory using neuroimaging.
To differentiate the neural correlates of familiarity and recollection in recognition memory.

Main Methods:

Utilized event-related potentials (ERPs) to analyze brain activity during recognition memory tasks.
Employed list strength manipulation, strengthening some items more than others on a study list.
Focused analysis on the FN400 and parietal old-new effects as ERP correlates of familiarity and recollection, respectively.
Conducted a second experiment using a remember/know test for converging evidence.

Main Results:

Increasing list strength selectively reduced the parietal old-new effect, an ERP correlate of recollection.
The FN400 old-new effect, an ERP correlate of familiarity, remained unaffected by list strength.
Remember/know results corroborated ERP findings, showing reduced recollection but intact familiarity with increased list strength.

Conclusions:

Findings support the CLS model's predictions regarding memory interference.
List strength selectively impacts recollection-based memory processes, leaving familiarity-based processes intact.
ERPs provide valuable insights into the neural mechanisms underlying memory interference and recognition.