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

Functional specialization in the human medial temporal lobe.

Morgan D Barense1, Timothy J Bussey, Andy C H Lee

  • 1Medical Research Council Cognition and Brain Sciences Unit, Cambridge CB2 2EF, United Kingdom. morgan.barense@mrc-cbu.cam.ac.uk

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|November 4, 2005
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

Memory strength at reactivation, not memory age, governs prediction error-driven updating of naturalistic event memory.

Philosophical transactions of the Royal Society of London. Series B, Biological sciences·2026
Same author

A conserved pulvinar projection to the amygdala revealed in macaque monkeys (Macaca mulatta).

Brain structure & function·2026
Same author

Memory in the Palm of Your Hand: Smartphone-based Methods for Measuring Memory in the Wild.

Journal of cognitive neuroscience·2026
Same author

Improving autobiographical episodic memory, quality of life, and sense of self with a smartphone intervention in early dementia: A case study.

Neuropsychological rehabilitation·2026
Same author

Prefrontal parvalbumin neurons mediate working memory in a task demand-dependent manner.

Nature communications·2026
Same author

From adaptive to maladaptive myelination: White matter dynamics in cognition and neurologic disorders.

Neuroscience and biobehavioral reviews·2026

This study reveals the medial temporal lobe (MTL) is not a unitary memory system. Selective hippocampal damage spared object discrimination, while broader MTL damage caused deficits related to feature ambiguity.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neurology

Background:

  • Animal studies show medial temporal lobe (MTL) functional specialization in memory.
  • Human studies often suggest a unitary MTL memory system for declarative memory.
  • Discrepancies exist regarding MTL memory specialization across species.

Purpose of the Study:

  • To resolve discrepancies between human and animal studies on MTL memory function.
  • To investigate whether the human MTL acts as a unitary system or has specialized components.
  • To characterize memory impairments in amnesic patients with selective versus extensive MTL damage.

Main Methods:

  • Amnesic patients with selective hippocampal or broader MTL damage were tested.
  • Variations of an object discrimination task, adapted from nonhuman primate research, were used.

Related Experiment Videos

  • Performance was compared on standard recall tasks and the object discrimination test.

    • Main Results:

    • Both patient groups showed equal impairment on standard recall tasks.
    • Patients with selective hippocampal damage performed normally on object discrimination.
    • Patients with broader MTL lesions were impaired, with deficits linked to "feature ambiguity" rather than task quantity.

    Conclusions:

    • The findings argue against a unitary view of human MTL memory function.
    • Evidence supports functional specialization within the human MTL, similar to animal models.
    • "Feature ambiguity" is identified as a key factor in MTL-dependent visual discrimination impairments.