Evidence map›Paper›PMID 31832719›Full record

Trial reportPsychopharmacology2020

Nicotine enhances auditory processing in healthy and normal-hearing young adult nonsmokers.

Carol Q Pham, Michelle R Kapolowicz, Raju Metherate, Fan-Gang Zeng

Registry-linked trialAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Psychopharmacology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04971954 (Using Nicotine to Reverse Age-related Auditory Processing Deficits), which is not on this map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT04971954 narecruitingnot on this mapstarted 2022, after this paper: background citation

Using Nicotine to Reverse Age-related Auditory Processing Deficits: Human Psychophysics and Electrophysiology

TypeinterventionalSponsorUniversity of California, IrvineRan2022 to 2026Enrolled48ConditionsAuditory Perceptual Impairment, AgingArmsNicotine gum, Placebo gum
3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Drug Discovery Targeting Nicotinic Acetylcholine Receptors for Hearing Loss.International journal of molecular sciences · 2026
    Review
  3. Article
  4. Article
  5. Cholinergic modulation of sensory perception and plasticity.Neuroscience and biobehavioral reviews · 2023
    Review
  6. Article
  7. αFrontiers in neural circuits · 2021
    Article
  8. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Carol Q PhamCenter for Hearing Research, University of California, Irvine, CA, USA.
Michelle R KapolowiczCenter for Hearing Research, University of California, Irvine, CA, USA.
Raju MetherateCenter for Hearing Research, University of California, Irvine, CA, USA.
Fan-Gang ZengCenter for Hearing Research, University of California, Irvine, CA, USA. fzeng@uci.edu.ORCID http://orcid.org/0000-0002-4325-2780

Funding

University of California Health Participation in the National COVID Cohort Collaborative (N3C)UL1TR001414 · NCATS · UNIVERSITY OF CALIFORNIA-IRVINE · PI COOPER, DAN M, VILAIN, ERIC J. · 2015 to 2023
$35.1M
Institute for Clinical and Translational ScienceUL1TR000153 · NCATS · UNIVERSITY OF CALIFORNIA-IRVINE · PI COOPER, DAN M · 2012 to 2015
$12.1M
NIDCD T32 Interdisciplinary Training Program in Hearing ResearchT32DC010775 · NIDCD · UNIVERSITY OF CALIFORNIA-IRVINE · PI Karina S Cramer, Raju Metherate · 2010 to 2026
$3.5M
FUNCTIONS OF NICOTINE RECEPTORS IN SENSORY NEOCORTEXR01DA012929 · NIDA · UNIVERSITY OF CALIFORNIA-IRVINE · PI METHERATE, RAJU · 2000 to 2012
$2.4M
Tinnitus Treatment with Targeted Electric StimulationR01DC015587 · NIDCD · UNIVERSITY OF CALIFORNIA-IRVINE · PI ZENG, FAN-GANG · 2016 to 2020
$1.9M
Functions of Nicotine Receptors in Sensory NeocortexR01DC013200 · NIDCD · UNIVERSITY OF CALIFORNIA-IRVINE · PI METHERATE, RAJU · 2013 to 2017
$1.7M
National Institutes of Health (US) 4R01-DC013200NCATS NIH HHS UL1 TR000153NCATS NIH HHS UL1 TR001414NIDA NIH HHS R01 DA012929NIDCD NIH HHS 5R01DC015587NIDCD NIH HHS R01 DC013200NIDCD NIH HHS R01 DC015587NIDCD NIH HHS T32 DC010775
6 · The paper itself

Abstract

rationaleElectrophysiological studies show that systemic nicotine narrows frequency receptive fields and increases gain in neural responses to characteristic frequency stimuli. We postulated that nicotine enhances related auditory processing in humans.

objectivesThe main hypothesis was that nicotine improves auditory performance. A secondary hypothesis was that the degree of nicotine-induced improvement depends on the individual's baseline performance.

methodsYoung (18-27 years old), normal-hearing nonsmokers received nicotine (Nicorette gum, 6mg) or placebo gum in a single-blind, randomized, crossover design. Subjects performed four experiments involving tone-in-noise detection, temporal gap detection, spectral ripple discrimination, and selective auditory attention before and after treatment. The perceptual differences between posttreatment nicotine and placebo conditions were measured and analyzed as a function of the pre-treatment baseline performance.

resultsNicotine significantly improved performance in the more difficult tasks of tone-in-noise detection and selective attention (effect size = - 0.3) but had no effect on relatively easier tasks of temporal gap detection and spectral ripple discrimination. The two tasks showing significant nicotine effects further showed no baseline-dependent improvement.

conclusionsNicotine improves auditory performance in difficult listening situations. The present results support future investigation of nicotine effects in clinical populations with auditory processing deficits or reduced cholinergic activation.

Indexed as

Nicotine Chewing GumAcoustic StimulationAdolescentAdultAttentionAuditory PerceptionCross-Over StudiesFemaleHealthy VolunteersHearingHumansMaleNicotineNon-SmokersOximetrySingle-Blind MethodNicotineNicotine Chewing GumAcetylcholinergic systemsAuditory processingNicotineSelective attentionSpectral ripple discriminationTemporal gap detectionTone in noise detection

Identifiers

PMID31832719
PMCPMC7039769

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.