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

Age-related differences for duration discrimination in rats

P Leblanc1, M H Weyers, M Soffié

  • 1Psychobiology Unit, University of Louvain, Louvain-la-Neuve, Belgium.

Physiology & Behavior
|August 1, 1996
PubMed
Summary

Older rats learn slower but can still discriminate durations equally well. Age impacts learning speed, not the ability to discern short versus long signals.

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

The ESCRT-0 subcomplex component Hrs/Hgs is a master regulator of myogenesis via modulation of signaling and degradation pathways.

BMC biology·2021
Same author

Effects of High-Intensity Interval Running Versus Cycling on Sclerostin, and Markers of Bone Turnover and Oxidative Stress in Young Men.

Calcified tissue international·2019
Same author

Amyotrophic lateral sclerosis in Huntington disease gene carrier.

Revue neurologique·2017
Same author

Ethno-Cultural Considerations in Cardiac Patients' Medication Adherence.

Clinical nursing research·2016
Same author

[Tardive dyskinesia and second generation antipsychotics: a review of four cases].

Revue medicale de Bruxelles·2016
Same author

Multistate outbreak of listeriosis caused by imported cheese and evidence of cross-contamination of other cheeses, USA, 2012.

Epidemiology and infection·2015

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Animal Behavior

Background:

  • Cognitive decline in aging is a significant area of research.
  • Understanding age-related changes in sensory processing and learning is crucial.
  • Previous studies suggest cognitive impairments in older animals may relate to learning speed.

Purpose of the Study:

  • To investigate the impact of aging on duration discrimination abilities in rats.
  • To compare the learning acquisition and performance of young versus aged rats.
  • To determine if age affects the capacity to discriminate between different stimulus durations.

Main Methods:

  • A symbolic matching-to-sample task was employed using auditory and visual stimuli.
  • Four groups of rats (6, 12, 18, and 24 months old) were trained.
  • Rats learned to associate lever presses with short (2 s) or long (10 s) signal durations.

Main Results:

  • Presenescent and senescent rats (18 and 24 months) exhibited slower acquisition of the task compared to younger rats (6 and 12 months).
  • Once the performance criterion was achieved, no significant age-related differences in accuracy were observed.
  • Correct response percentages were comparable across all age groups, regardless of stimulus duration.

Conclusions:

  • Aging in rats primarily affects the speed of learning new tasks, not the fundamental ability for duration discrimination.
  • Cognitive deficits in older animals may stem from slower learning processes rather than an inability to process sensory information.
  • These findings support the hypothesis that age-related cognitive impairment is more about learning efficiency than discriminative capacity.

Related Experiment Videos