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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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Cross-dimensional magnitude interactions arise from memory interference.

Zhenguang G Cai1, Ruiming Wang2, Manqiong Shen3

  • 1Department of Linguistics and Modern Languages, The Chinese University of Hong Kong, Hong Kong, China; Brain and Mind Institute, The Chinese University of Hong Kong, Hong Kong, China; School of Psychology, University of East Anglia, UK.

Cognitive Psychology
|August 31, 2018
PubMed
Summary
This summary is machine-generated.

Cross-dimensional magnitude interactions, like space and time, stem from memory interference. This occurs when information from different sensory dimensions co-exists in working memory, influencing perception.

Keywords:
Bayesian inferenceMemory interferenceMemory noiseMental magnitudeSpace-time interaction

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Area of Science:

  • Cognitive Psychology
  • Perception
  • Human Memory

Background:

  • Perceptual magnitudes from different dimensions (e.g., space, time) interact.
  • The underlying mechanisms of these cross-dimensional interactions remain poorly understood.
  • Investigating memory interference as a potential cause for these interactions.

Purpose of the Study:

  • To determine if cross-dimensional magnitude interactions arise from memory interference.
  • To explore the role of working memory in mediating space-time interactions.
  • To examine how memory noise influences the direction and extent of these interactions.

Main Methods:

  • Four experiments involving reproduction of line length and stimulus duration.
  • Manipulation of cue timing relative to memory retrieval for duration and length.
  • Varying the 'noisiness' of spatial stimuli (filled vs. unfilled lengths).

Main Results:

  • Space-time interaction occurred when length and duration co-existed in working memory.
  • Interference effects were dependent on the timing of cues and memory retrieval.
  • Memory noise influenced the magnitude and direction of cross-dimensional interactions; time also interfered with space perception.

Conclusions:

  • Cross-dimensional magnitude interactions are driven by memory interference.
  • The relative memory noise of dimensions dictates interaction effects.
  • A Bayesian model integrating noisy perception with prior knowledge of magnitude co-variation explains these interactions.