Cited by 52Attention Deficit Hyperactivity DisorderAdvanced Neuroimaging Techniques and ApplicationsNeural and Behavioral Psychology Studies

Lower white matter microstructure in the superior longitudinal fasciculus is associated with increased response time variability in adults with attention-deficit/hyperactivity disorder

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Wolfers, Thomas, Onnink, A. Marten H., Zwiers, Marcel P., Arias-Vasquez, Alejandro, Hoogman, Martine, Mostert, Jeanette C., Kan, Cornelis C., Slaats-Willemse, Dorine +2 more·2015·Journal of Psychiatry and Neuroscience

Abstract

BACKGROUND: Response time variability (RTV) is consistently increased in patients with attention-deficit/hyperactivity disorder (ADHD). A right-hemispheric frontoparietal attention network model has been implicated in these patients. The 3 main connecting fibre tracts in this network, the superior longitudinal fasciculus (SLF), inferior longitudinal fasciculus (ILF) and the cingulum bundle (CB), show microstructural abnormalities in patients with ADHD. We hypothesized that the microstructural integrity of the 3 white matter tracts of this network are associated with ADHD and RTV. METHODS: We examined RTV in adults with ADHD by modelling the reaction time distribution as an exponentially modified Gaussian (ex-Gaussian) function with the parameters μ, σ and τ, the latter of which has been attributed to lapses of attention. We assessed adults with ADHD and healthy controls using a sustained attention task. Diffusion tensor imaging-derived fractional anisotropy (FA) values were determined to quantify bilateral microstructural integrity of the tracts of interest. RESULTS: We included 100 adults with ADHD and 96 controls in our study. Increased τ was associated with ADHD diagnosis and was linked to symptoms of inattention. An inverse correlation of τ with mean FA was seen in the right SLF of patients with ADHD, but no direct association between the mean FA of the 6 regions of interest with ADHD could be observed. LIMITATIONS: Regions of interest were defined a priori based on the attentional network model for ADHD and thus we might have missed effects in other networks. CONCLUSION: This study suggests that reduced microstructural integrity of the right SLF is associated with elevated τ in patients with ADHD.

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  • On a neural level, RTV has been associated with smaller white matter tracts in the late developing fronto-parietal attention (superior longitudinal fasciculus) and cortico-thalamic cognitive control tracts and reduced activation in fronto-striatal and superior temporal activation in children and adults with ADHD.

    “In line with a role in attention and self-control, on a neural level, RTV has been associated with smaller white matter tracts in the late developing fronto-parietal attention (superior longitudinal fasciculus) and cortico-thalamic cognitive control tracts and reduced activation in fronto-striatal and superior temporal activation in children and adults with ADHD (18, 67–70), suggesting an”

    From Differential effects of a single dose of Lisdexamfetamine and Guanfacine on cognitive function in children with ADHD (2025) · cites this paper as [18]

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  • Studies of fractional anisotropy using diffusion tensor imaging in adults with ADHD have found that increased RTV is associated with reduced microstructural integrity of the superior longitudinal fasciculus and altered white matter structural properties of the corticothalamic tract.

    “Studies of fractional anisotropy using diffusion tensor imaging in adults with ADHD have found that increased RTV is associated with reduced microstructural integrity of the superior longitudinal fasciculus (Wolfers et al. 2015) and altered white matter structural properties of the corticothalamic tract (Kölle et al. 2022).”
  • The tau parameter was associated with microstructural integrity of the right superior longitudinal fasciculus.

    “Recently, we showed that the tau parameter was associated with the microstructural integrity of the right superior longitudinal fasciculus, a white matter tract implicated in both attention and ADHD (Wolfers et al., 2015).”
  • Ex-Gaussian modeling showed that increased reaction time variability is partly due to overly slow responses.

    “More thorough investigation of RTV used ex-Gaussian modeling and showed that increased RTV is partly due to overly slow responses (Feige et al. 2013; Gmehlin et al., 2013; Wolfers et al., 2015).”

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Research works printed but not linked: 2

  1. Kooij JJS. Adult ADHD: diagnostic assessment and treatment. Springer; 2012.
  2. De Sonneville L. Amsterdam neuropsychological tasks: a computer- aided assessment program. Computers in psychology 1999;6:187-203.

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Authors
Wolfers, T., Onnink, A. M. H., Zwiers, M. P., Arias-Vasquez, A., Hoogman, M., Mostert, J. C., Kan, C. C., Slaats-Willemse, D., Buitelaar, J. K., & Franke, B.
Affiliations
  • Radboud University Nijmegen (NL)
  • From the Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands
  • Radboud University Medical Center (NL)
Venue
Journal of Psychiatry and Neuroscience
Published
2015-09
Volume
40
Issue
5
Pages
344-351
ISSN
  • 1180-4882 (ISSN-L)
  • 1488-2434
OpenAlex
W2336828789
Cited by
52
References
53
Citations by year
2026: 2 · 2025: 5 · 2024: 6 · 2023: 7 · 2022: 8 · 2021: 4 · 2020: 3 · 2019: 8 · 2018: 2 · 2017: 2 · 2016: 4 · 2015: 1
FWCI
2.43
Type
journal article
Language
en
Open access
Locations
  • Journal of Psychiatry and Neuroscience (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Radboud Repository (Radboud University) (submittedVersion)
  • Radboud Repository (Radboud University) (submittedVersion, other-oa)
Funders
  • Nederlandse Organisatie voor Wetenschappelijk Onderzoek (FP7 2007-2013, 016‐130‐669, 433‐09‐229)
  • Hersenstichting
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
attention deficit hyperactivity disorder, reaction time variability, superior longitudinal fasciculus, white matter microstructure, fractional anisotropy, sustained attention, inattention, adult ADHD, diffusion tensor imaging
MeSH terms
Adult, Attention, Attention Deficit Disorder with Hyperactivity, Female, Humans, Male, Middle Aged, Models, Neurological, Nerve Fibers, Nerve Net, Neuropsychological Tests, Reaction Time, Anisotropy, Diffusion Magnetic Resonance Imaging, Diffusion Tensor Imaging, White Matter

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