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Event Related Potentials (ERPs) and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder (ADHD)

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Methylphenidate significantly improves declarative memory functioning of adults with ADHD.

Joris C Verster¹, Evelijne M Bekker, J J Sandra Kooij

¹Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, PO Box 80082, 3508 TB Utrecht, the Netherlands. j.c.verster@uu.nl

Psychopharmacology

|July 21, 2010

Summary

Methylphenidate treatment significantly improved delayed word recall in adults with attention-deficit hyperactivity disorder (ADHD). This suggests methylphenidate enhances declarative memory in ADHD patients.

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Published on: February 11, 2019

Area of Science:

Neuroscience
Psychiatry
Cognitive Psychology

Background:

Adults with attention-deficit hyperactivity disorder (ADHD) often exhibit declarative memory deficits.
Limited research exists on the impact of methylphenidate on memory functioning in this population.

Purpose of the Study:

To investigate the effects of methylphenidate on memory in adults diagnosed with ADHD.
To determine if methylphenidate improves declarative memory functioning.

Main Methods:

A randomized crossover trial involving 18 adult ADHD patients who responded to methylphenidate.
Participants received either their usual methylphenidate dose or a placebo in a randomized order, with a washout period in between.
Memory was assessed using immediate word recall, delayed word recall, and recognition tests at specific intervals after treatment administration.

Main Results:

No significant differences were observed in delayed recognition or immediate recall between methylphenidate and placebo conditions.
Delayed word recall was significantly enhanced in the methylphenidate condition compared to placebo.
A significant correlation was found between baseline depression scores (CES-D) and improvements in delayed recall.

Conclusions:

Methylphenidate demonstrates a positive effect on declarative memory, specifically improving delayed word recall in adults with ADHD.
Further research is recommended to explore the potential mediating role of subclinical depressive symptoms in methylphenidate's effects on declarative memory.