Evidence map›Paper›PMID 25479234›Full record

ArticlePloS one2014

Intraindividual variability in inhibitory function in adults with ADHD--an ex-Gaussian approach.

Dennis Gmehlin, Anselm B M Fuermaier, Stephan Walther, Rudolf Debelak, Mirjam Rentrop, Celina Westermann, Anuradha Sharma, Lara Tucha, Janneke Koerts, Oliver Tucha and 2 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 14% 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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 59 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Time Perception in Adult ADHD: Findings from a Decade-A Review.International journal of environmental research and public health · 2023
    Review
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  12. Article
  13. Article
  14. Basic processes as foundations of cognitive impairment in adult ADHD.Journal of neural transmission (Vienna, Austria : 1996) · 2019
    Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. An investigation of intra-individual variability in children with fetal alcohol spectrum disorder (FASD).Child neuropsychology : a journal on normal and abnormal development in childhood and adolescence · 2018
    Article
  20. 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

12 authors at 3 institutions in 2 countries.

Dennis GmehlinDepartment of Clinical Psychology and Neuropsychology, SRH Klinikum, Karlsbad-Langensteinbach, Germany.
Anselm B M FuermaierDepartment of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands.
Stephan WaltherSection of Experimental Psychopathology and Neurophysiology, Department of child and adolescent Psychiatry, University of Heidelberg, Germany.
Rudolf DebelakSchuhfried GmbH, Mödling, Austria.
Mirjam RentropDepartment of Clinical Psychology and Neuropsychology, SRH Klinikum, Karlsbad-Langensteinbach, Germany.
Celina WestermannDepartment of Clinical Psychology and Neuropsychology, SRH Klinikum, Karlsbad-Langensteinbach, Germany.
Anuradha SharmaSection of Experimental Psychopathology and Neurophysiology, Department of child and adolescent Psychiatry, University of Heidelberg, Germany.
Lara TuchaDepartment of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands.
Janneke KoertsDepartment of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands.
Oliver TuchaDepartment of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands.
Matthias WeisbrodPsychiatric Department, SRH Klinikum, Karlsbad-Langensteinbach, Germany; SüdWestAkadamie für Neuropsychologie (SWAN), Heidelberg, Germany; Section of Experimental Psychopathology and Neurophysiology, Department of child and adolescent Psychiatry, University of Heidelberg, Germany.
Steffen AschenbrennerDepartment of Clinical Psychology and Neuropsychology, SRH Klinikum, Karlsbad-Langensteinbach, Germany; SüdWestAkadamie für Neuropsychologie (SWAN), Heidelberg, Germany.
SRH Klinikum Karlsbad-Langensteinbach · DEUniversity of Groningen · NLHeidelberg University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveAttention deficit disorder (ADHD) is commonly associated with inhibitory dysfunction contributing to typical behavioral symptoms like impulsivity or hyperactivity. However, some studies analyzing intraindividual variability (IIV) of reaction times in children with ADHD (cADHD) question a predominance of inhibitory deficits. IIV is a measure of the stability of information processing and provides evidence that longer reaction times (RT) in inhibitory tasks in cADHD are due to only a few prolonged responses which may indicate deficits in sustained attention rather than inhibitory dysfunction. We wanted to find out, whether a slowing in inhibitory functioning in adults with ADHD (aADHD) is due to isolated slow responses.

methodsComputing classical RT measures (mean RT, SD), ex-Gaussian parameters of IIV (which allow a better separation of reaction time (mu), variability (sigma) and abnormally slow responses (tau) than classical measures) as well as errors of omission and commission, we examined response inhibition in a well-established GoNogo task in a sample of aADHD subjects without medication and healthy controls matched for age, gender and education.

resultsWe did not find higher numbers of commission errors in aADHD, while the number of omissions was significantly increased compared with controls. In contrast to increased mean RT, the distributional parameter mu did not document a significant slowing in aADHD. However, subjects with aADHD were characterized by increased IIV throughout the entire RT distribution as indicated by the parameters sigma and tau as well as the SD of reaction time. Moreover, we found a significant correlation between tau and the number of omission errors.

conclusionsOur findings question a primacy of inhibitory deficits in aADHD and provide evidence for attentional dysfunction. The present findings may have theoretical implications for etiological models of ADHD as well as more practical implications for neuropsychological testing in aADHD.

Indexed as

NeuropsychologyAdultAgedAttentionAttention Deficit Disorder with HyperactivityChoice BehaviorFemaleHumansHyperkinesisMaleMiddle AgedNeuropsychological TestsNormal DistributionReaction Time

Identifiers

PMID25479234
PMCPMC4257533
OpenAlexW2064364707

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.