Cited by 89Attention Deficit Hyperactivity DisorderSchizophrenia research and treatmentNeural and Behavioral Psychology Studies

The effects of methylphenidate on prepulse inhibition during attended and ignored prestimuli among boys with attention-deficit hyperactivity disorder

Hawk, Larry W., Yartz, Andrew R., Pelham, William E., Lock, Thomas M.·2003·Psychopharmacology

Abstract

Rationale and objectives The present study investigated attentional modification of prepulse inhibition of startle among boys with and without attention-deficit hyperactivity disorder (ADHD). Two hypotheses were tested: (1) whether ADHD is associated with diminished prepulse inhibition during attended prestimuli, but not ignored prestimuli, and (2) whether methylphenidate selectively increases prepulse inhibition to attended prestimuli among boys with ADHD.Methods Participants were 17 boys with ADHD and 14 controls. Participants completed a tone discrimination task in each of two sessions separated by 1 week. ADHD boys were administered methylphenidate (0.3 mg/kg) in one session and placebo in the other session in a randomized, double-blind fashion. During each series of 72 tones (75 dB; half 1200-Hz, half 400-Hz), participants were paid to attend to one pitch and ignore the other. Bilateral eyeblink electromyogram startle responses were recorded in response to acoustic probes (50-ms, 102-dB white noise) presented following the onset of two-thirds of tones, and during one-third of intertrial intervals.Results Relative to controls, boys with ADHD exhibited diminished prepulse inhibition 120 ms after onset of attended but not ignored prestimuli following placebo administration. Methylphenidate selectively increased prepulse inhibition to attended prestimuli at 120 ms among boys with ADHD to a level comparable to that of controls, who did not receive methylphenidate.Conclusions These data are consistent with the hypothesis that ADHD involves diminished selective attention and suggest that methylphenidate ameliorates the symptoms of ADHD, at least in part, by altering an early attentional mechanism.

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Crossref · 10.1007/s00213-002-1235-7

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Authors
Hawk, L. W., Yartz, A. R., Pelham, W. E., & Lock, T. M.
Affiliations
  • State University of New York (US)
  • University at Buffalo, State University of New York (US)
Corresponding author
Hawk, Larry W.
Venue
Psychopharmacology
Published
2003-01
Volume
165
Issue
2
Pages
118-127
ISSN
  • 0033-3158 (ISSN-L)
  • 1432-2072
OpenAlex
W329940318
Cited by
89
References
64
Citations by year
2026: 3 · 2025: 1 · 2024: 3 · 2023: 2 · 2022: 1 · 2021: 2 · 2020: 3 · 2019: 3 · 2018: 3 · 2017: 5 · 2016: 3 · 2015: 3 · 2014: 4 · 2013: 4 · 2012: 3
FWCI
3.26
Type
journal article
Language
en
Open access
closed
Locations
  • Psychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
University at Buffalo
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
attention deficit hyperactivity disorder, methylphenidate, prepulse inhibition, startle response, selective attention, boys
MeSH terms
Central Nervous System Stimulants, Arousal, Attention, Attention Deficit Disorder with Hyperactivity, Blinking, Child, Double-Blind Method, Electromyography, Humans, Inhibition, Psychological, Male, Methylphenidate, Pitch Discrimination, Reflex, Startle

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