Details

Autor(en) / Beteiligte

• Seo, Bo-Kyung
• Sartory, Gudrun
• Kis, Bernhard
• Scherbaum, Norbert
• Müller, Bernhard W.

Titel

Intensity Dependence of Auditory Evoked Potentials (IDAP) in Adult Attention Deficit/Hyperactivity (ADHD) Disorder

Ist Teil von

• Journal of psychophysiology, 2014-01, Vol.28 (2), p.63-72

Ort / Verlag

Hogrefe Publishing

Erscheinungsjahr

2014

Quelle

PsycARTICLES

Beschreibungen/Notizen

• Intensity-dependent auditory evoked potentials (IDAP) were shown to be increased in highly impulsive individuals. As impulsivity is one of the core symptoms of attention deficit/hyperactivity disorder (ADHD), patients with ADHD were expected to exhibit an enhanced IDAP. Twenty-five ADHD patients taking methylphenidate and 21 healthy control participants were given diagnostic questionnaires including the Barratt Impulsivity Scale and IDAP was assessed with five-tone intensities. Amplitude, latency, and intensity slope of the N1, P2, and N1/P2 were determined. Contrary to our hypothesis, there was no significant group difference with regard to N1 amplitude and ADHD patients exhibited significantly lower P2 amplitude at high intensity and a flatter N1/P2 slope of the stimulus intensity function than healthy controls. Motor impulsivity, a subscale of the Barratt impulsivity scale, showed a significantly negative correlation with P2 amplitude within the ADHD group. The unexpected results could be due to the effect of methylphenidate.