Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

An fMRI study on memory discriminability for complex visual scenes.

François Blondin1, Martin Lepage

  • 1Brain Imaging Group, Douglas Hospital Research Centre, McGill University, Montreal, Québec, Canada.

Human Brain Mapping
|September 27, 2007
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Premorbid adjustment problems, negative symptoms, and cognitive impairment in a large international sample at clinical high risk for psychosis: Findings from the Accelerating Medicines Partnership-Schizophrenia.

Schizophrenia bulletin·2026
Same author

Autonomy Support from Healthcare Professionals Improves Functioning in Early Psychosis Through Psychological Growth.

Schizophrenia bulletin·2026
Same author

Barriers and facilitators to implementing immersive virtual reality in long-term care settings: an interdisciplinary partnership study exploring staff perspectives.

Frontiers in pain research (Lausanne, Switzerland)·2026
Same author

Chicken or the egg: The relationship between cognitive deficits and negative symptoms in first episode psychosis.

Schizophrenia research·2026
Same author

Third-wave therapy with virtual reality exposure: Transdiagnostic proof of concept for the treatment of social anxiety.

Journal of affective disorders·2025
Same author

Editorial: <i>In vivo</i> magnetic resonance imaging of metabolic disorders.

Frontiers in endocrinology·2025
Same journal

Injury Severity Influences Long-Term Cognitive Control in Pediatric "Mild" Traumatic Brain Injury.

Human brain mapping·2026
Same journal

Early Adulthood Signatures of Motherhood in Brain Aging.

Human brain mapping·2026
Same journal

Neural Markers of Interocular Grouping During Binocular Rivalry With MEG.

Human brain mapping·2026
Same journal

Neural Correlates of Explicit Outcome Expectation Effects: An Activation Likelihood Estimation Meta-Analysis.

Human brain mapping·2026
Same journal

Benchmarking fMRI Denoising Pipelines.

Human brain mapping·2026
Same journal

Modeled Long-Term Effects of Psilocybin on Dynamic Activity and Effective Connectivity of Fronto-Striatal-Thalamic Circuits.

Human brain mapping·2026
See all related articles

The fan effect shows memory retrieval slows with more associated information. Brain scans reveal right prefrontal cortex activity increases with memory interference from complex visual scenes.

Area of Science:

  • Cognitive Neuroscience
  • Neuroimaging

Background:

  • The fan effect describes increased reaction time in memory recall as associated information grows.
  • Understanding the neural basis of the fan effect is crucial for memory research.

Purpose of the Study:

  • To investigate the neural correlates of the fan effect using functional magnetic resonance imaging (fMRI).
  • To examine how memory interference, influenced by the amount of associated information, affects brain activity during visual scene recognition.

Main Methods:

  • Employing fMRI to monitor brain activity during a visual recognition task involving landscape pictures.
  • Manipulating stimulus discriminability by presenting one segment (high discriminability) versus two segments (low discriminability) of the same picture during encoding.

Related Experiment Videos

Main Results:

  • Significantly faster reaction times were observed in the high discriminability condition compared to the low discriminability condition.
  • Increased brain activity in the low versus high discriminability condition was detected in the right prefrontal cortex, bilateral parietal cortex, and late visual processing areas.
  • Activity in the bilateral medial temporal gyrus (including the hippocampus) and prefrontal cortex (BA 10) correlated with stimuli that were more salient in memory.

Conclusions:

  • The findings support the role of the prefrontal cortex in managing memory interference, particularly for nonverbal material, with a right-lateralized effect.
  • The study suggests that increased activity in specific brain regions reflects the processing of perceptual salience and memory interference related to visual information.