OBJECTIVE: Attention Deficit Hyperactivity Disorder (ADHD), a common developmental syndrome with inattention, hyperactivity, and impulsivity, is typically treated with the psychostimulant drug, methylphenidate (MPH). We explored the feasibility of using functional near-infrared spectroscopy (fNIRS) to search for a clinically implementable biological marker for the acute MPH effect on ADHD children. METHODS: Following an MPH washout period, twelve ADHD children performed a go/no-go task before and 1.5 h after MPH intake. fNIRS was used to monitor the lateral prefrontal cortical hemodynamics of ADHD children performing a go/no-go task. RESULTS: There was no significant activation in the lateral prefrontal cortices examined before MPH intake. However, after MPH intake, significant MPH-elicited activation (oxygenated hemoglobin signal increase) was detected in the right lateral prefrontal cortex (LPFC) implicated with response inhibition functions. There was a large significant correlation between increases in task performance and activation in the right LPFC. CONCLUSIONS: The improved cognitive performance was associated with activation in the right LPFC, which might serve as a biological marker to monitor the effect of MPH in ADHD children. SIGNIFICANCE: MPH-effect assessment in ADHD children using fNIRS can be performed within a 3 h stay at a hospital during a single visit, and thus may be integrated into clinical practice.
OBJECTIVE:Attention Deficit Hyperactivity Disorder (ADHD), a common developmental syndrome with inattention, hyperactivity, and impulsivity, is typically treated with the psychostimulant drug, methylphenidate (MPH). We explored the feasibility of using functional near-infrared spectroscopy (fNIRS) to search for a clinically implementable biological marker for the acute MPH effect on ADHDchildren. METHODS: Following an MPH washout period, twelve ADHDchildren performed a go/no-go task before and 1.5 h after MPH intake. fNIRS was used to monitor the lateral prefrontal cortical hemodynamics of ADHDchildren performing a go/no-go task. RESULTS: There was no significant activation in the lateral prefrontal cortices examined before MPH intake. However, after MPH intake, significant MPH-elicited activation (oxygenated hemoglobin signal increase) was detected in the right lateral prefrontal cortex (LPFC) implicated with response inhibition functions. There was a large significant correlation between increases in task performance and activation in the right LPFC. CONCLUSIONS: The improved cognitive performance was associated with activation in the right LPFC, which might serve as a biological marker to monitor the effect of MPH in ADHDchildren. SIGNIFICANCE: MPH-effect assessment in ADHDchildren using fNIRS can be performed within a 3 h stay at a hospital during a single visit, and thus may be integrated into clinical practice.
Authors: Ole Jakob Storebø; Nadia Pedersen; Erica Ramstad; Maja Lærke Kielsholm; Signe Sofie Nielsen; Helle B Krogh; Carlos R Moreira-Maia; Frederik L Magnusson; Mathilde Holmskov; Trine Gerner; Maria Skoog; Susanne Rosendal; Camilla Groth; Donna Gillies; Kirsten Buch Rasmussen; Dorothy Gauci; Morris Zwi; Richard Kirubakaran; Sasja J Håkonsen; Lise Aagaard; Erik Simonsen; Christian Gluud Journal: Cochrane Database Syst Rev Date: 2018-05-09