Evidence map›Paper›PMID 31669326›Full record

ArticleInternational journal of psychophysiology : official journal of the International Organization of Psychophysiology2019

Dopaminergic hypo-activity and reduced theta-band power in autism spectrum disorder: A resting-state EEG study.

Taylor Hornung, Wen-Hsuan Chan, Ralph-Axel Müller, Jeanne Townsend, Brandon Keehn

Open access · greenAbstract read
In one paragraph

Article in International journal of psychophysiology : official journal of the International Organization of Psychophysiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
1.2field-weighted citation impact, top 21% of its field
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Cortical Network Overconnectivity Relates to Sensory, Cognitive, and Social Dimensions in Young Children With Autism Spectrum Disorder.Autism research : official journal of the International Society for Autism Research · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
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

5 authors at 3 institutions in 1 country.

Taylor HornungDepartment of Biological Sciences, Purdue University, West Lafayette, IN, United States of America.
Wen-Hsuan ChanResearch on Autism and Development Lab, Department of Neurosciences, University of California, San Diego, San Diego, CA, United States of America.
Ralph-Axel MüllerBrain Development Imaging Laboratory, Department of Psychology, San Diego State University, San Diego, CA, United States of America.
Jeanne TownsendResearch on Autism and Development Lab, Department of Neurosciences, University of California, San Diego, San Diego, CA, United States of America.
Brandon KeehnDepartment of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, IN, United States of America; Department of Psychological Sciences, Purdue University, West Lafayette, IN, United States of America. Electronic address: bkeehn@purdue.edu.
Autism Research Institute · USPurdue University West Lafayette · USSan Diego State University · US

Funding

Cognitive Effects of Cerebellar Dysfunction in AutismR01NS042639 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI TOWNSEND, JEANNE · 2003 to 2007
$2.0M
Linking Local Activity and Functional Connectivity in AutismR01MH081023 · NIMH · SAN DIEGO STATE UNIVERSITY · PI MUELLER, RALPH-AXEL · 2009 to 2013
$1.9M
NIMH NIH HHS R01 MH081023NINDS NIH HHS R01 NS042639
6 · The paper itself

Abstract

backgroundPrior studies using a variety of methodologies have reported inconsistent dopamine (DA) findings in individuals with autism spectrum disorder (ASD), ranging from dopaminergic hypo- to hyper-activity. Theta-band power derived from scalp-recorded electroencephalography (EEG), which may be associated with dopamine levels in frontal cortex, has also been shown to be atypical in ASD. The present study examined spontaneous eye-blink rate (EBR), an indirect, non-invasive measure of central dopaminergic activity, and theta power in children with ASD to determine: 1) whether ASD may be associated with atypical DA levels, and 2) whether dopaminergic dysfunction may be associated with aberrant theta-band activation.

methodParticipants included thirty-two children with ASD and thirty-two age-, IQ-, and sex-matched typically developing (TD) children. Electroencephalography and eye-tracking data were acquired while participants completed an eyes-open resting-state session. Blinks were counted and EBR was determined by dividing blink frequency by session duration and theta power (4-7.5 Hz) was extracted from midline leads.

resultsEye-blink rate and theta-band activity were significantly reduced in children with ASD as compared to their TD peers. For all participants, greater midline theta power was associated with increased EBR (related to higher DA levels).

conclusionsThese results suggest that ASD may be associated with dopaminergic hypo-activity, and that this may contribute to atypical theta-band power. Lastly, EBR may be a useful tool to non-invasively index dopamine levels in ASD and could potentially have many clinical applications, including selecting treatment options and monitoring treatment response.

Indexed as

AdolescentAutism Spectrum DisorderBlinkingBrain MappingChildDopamineElectroencephalographyFemaleHumansMaleRestTheta RhythmDopamineAutism spectrum disorderBlink rateDopamineEEGEye trackingTheta

Identifiers

PMID31669326
PMCPMC6933439
OpenAlexW2982189240

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.