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

Physostigmine enhances performance on an odor mixture discrimination test.

R L Doty1, R Bagla, N Kim

  • 1Smell and Taste Center, Department of Otorhinolaryngology: Head and Neck Surgery, University of Pennsylvania Medical Center, Philadelphia 19104, USA.

Physiology & Behavior
|March 12, 1999
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

Optimal clinicogenetic criteria for post-operative re-irradiation in recurrent glioblastoma: KROG 21-02.

ESMO open·2026
Same author

Generation of a quasi-Bessel beam with a super-Gaussian axial intensity profile.

Applied optics·2026
Same author

Functional connectivity differences of the olfactory network in Parkinson's Disease, mild cognitive impairment and cognitively normal individuals: A resting-state fMRI study.

Neuroscience·2024
Same author

Accuracy of artificial intelligence-assisted growth prediction in skeletal Class I preadolescent patients using serial lateral cephalograms for a 2-year growth interval.

Orthodontics & craniofacial research·2024
Same author

Adrenalectomy for the treatment of hypotension in a cat with phaeochromocytoma associated with caudal vena cava syndrome.

The Journal of small animal practice·2024
Same author

OsCM regulates rice defence system in response to UV light supplemented with drought stress.

Plant biology (Stuttgart, Germany)·2023
Same journal

Domain-Specific Adaptations in Visual Working Memory: Differentiated Performance Profiles between Open- and Closed-Skill Athletes.

Physiology & behavior·2026
Same journal

Post-weaning social isolation increases reward-seeking behavior in mice.

Physiology & behavior·2026
Same journal

DHEA model of PCOS selectively alters reproductive but not metabolic or behavioral phenotypes in female Long-Evans rats.

Physiology & behavior·2026
Same journal

Importance of Apparatus Scaling in Novel Object Recognition for Juvenile and Adult Rats.

Physiology & behavior·2026
Same journal

Chronic activity-based anorexia alters food intake microstructure in a time-dependent manner in female rats.

Physiology & behavior·2026
Same journal

Apelin receptor antagonist (ML221) facilitates memory reconsolidation in novel object recognition task.

Physiology & behavior·2026
See all related articles

Physostigmine, a cholinesterase inhibitor, improved rats' ability to distinguish between complex odor mixtures. This suggests that cholinergic system activation sharpens olfactory discrimination, particularly for challenging scent distinctions.

Area of Science:

  • Neuroscience
  • Olfactory System Research
  • Pharmacology

Background:

  • Acetylcholine is a key neurotransmitter in the olfactory pathway.
  • It plays a role in the olfactory bulb's glomerular and internal plexiform layers.

Purpose of the Study:

  • To investigate the effect of physostigmine, a cholinesterase inhibitor, on odor mixture discrimination in rats.
  • To determine if cholinergic activation enhances the ability to discern complex odors.

Main Methods:

  • Eight rats were trained on an odor mixture discrimination test with varying difficulty levels.
  • Physostigmine (0.00-0.20 mg/kg) or saline was administered systemically.
  • Performance was measured across different drug treatments and odor concentrations.

Related Experiment Videos

Main Results:

  • Physostigmine enhanced odor discrimination performance in a dose-dependent manner.
  • The drug's effect was more pronounced on more difficult discrimination tasks.
  • Cholinergic activation appears to sharpen the perception of subtle odor differences.

Conclusions:

  • Systemic administration of physostigmine improves olfactory discrimination in rats.
  • Cholinergic pathways are crucial for discerning complex odor stimuli.
  • This highlights the role of acetylcholine in olfactory processing and sensory perception.