Event-related potentials in children with attention deficit hyperactivity disorder: An investigation using an auditory oddball task

2012 ◽  
Vol 85 (1) ◽  
pp. 106-115 ◽  
Author(s):  
Magdalena Senderecka ◽  
Anna Grabowska ◽  
Krzysztof Gerc ◽  
Jakub Szewczyk ◽  
Roman Chmylak
Keyword(s):  
Attention Deficit Hyperactivity Disorder ◽  
Attention Deficit ◽  
Event Related Potentials ◽  
Auditory Oddball ◽  
Hyperactivity Disorder ◽  
Oddball Task ◽  
Related Potentials ◽  
Auditory Oddball Task

The Theta/Beta Ratio as an Index of Cognitive Processing in Adults With the Combined Type of Attention Deficit Hyperactivity Disorder

2019 ◽  
Vol 51 (3) ◽  
pp. 167-173
Author(s):  
Christie Picken ◽  
Adam R. Clarke ◽  
Robert J. Barry ◽  
Rory McCarthy ◽  
Mark Selikowitz
Keyword(s):  
Attention Deficit Hyperactivity Disorder ◽  
Cognitive Processing ◽  
Attention Deficit ◽  
P300 Amplitude ◽  
P300 Latency ◽  
Alpha Power ◽  
Auditory Oddball ◽  
Hyperactivity Disorder ◽  
Oddball Task ◽  
Auditory Oddball Task

An elevated theta/beta ratio in the EEG has long been observed among individuals with Attention Deficit Hyperactivity Disorder (ADHD). The theta/beta ratio was previously hypothesised to be an index of arousal, but a number of studies failed to find any association between the ratio and indices of arousal, instead proposing that the theta/beta ratio may actually be indicative of cognitive processing. This hypothesis was tested by Clarke et al using a sample of healthy adults, with results indicating that the theta/beta ratio correlated with a marker of cognitive processing (P300 latency in an auditory oddball task), while P300 amplitude correlated with an arousal marker (alpha power). The aim of this study was to test whether similar results could be found in a sample of 41 adults with the combined type of ADHD. EEGs were recorded during an eyes-closed resting condition and an auditory oddball task. Results demonstrated that the theta/beta ratio correlated significantly with P300 latency. Absolute alpha power did not correlate significantly with P300 amplitude or P300 latency. These results support the hypotheses that the theta/beta ratio is a marker of cognitive processing capacity in both the general population and in participants with ADHD, and that the alpha/arousal linkage is anomalous in ADHD.

Availability of dopamine transporters and auditory P300 abnormalities in adults with attention-deficit hyperactivity disorder: preliminary results

CNS Spectrums ◽  
2017 ◽  
Vol 23 (4) ◽  
pp. 264-270 ◽  
Author(s):  
Ching-Lin Chu ◽  
I Hui Lee ◽  
Mei Hung Chi ◽  
Kao Chin Chen ◽  
Po See Chen ◽  
...  
Keyword(s):  
Attention Deficit Hyperactivity Disorder ◽  
Attention Deficit ◽  
Photon Emission ◽  
Event Related Potentials ◽  
P300 Amplitude ◽  
Emission Computed Tomography ◽  
Adhd Group ◽  
Hyperactivity Disorder ◽  
Auditory P300 ◽  
Related Potentials

ObjectivePrevious studies have indicated that there is dopamine transporter (DAT) dysregulation and P300 abnormality in adults with attention-deficit hyperactivity disorder (ADHD); however, the correlations among the three have not been fully explored.MethodsA total of 11 adults (9 males and 2 females) with ADHD and 11 age-, sex-, and education-level-matched controls were recruited. We explored differences in DAT availability using single-photon emission computed tomography and P300 wave of event-related potentials between the two groups. The correlation between DAT availability and P300 performance was also examined.ResultsDAT availability in the basal ganglia, caudate nucleus, and putamen was significantly lower in the ADHD group. Adults with ADHD had lower auditory P300 amplitudes at the Pz and Cz sites, as well as longer Fz latency than controls. DAT availability was negatively correlated to P300 latency at Pz and Fz.ConclusionsAdults with ADHD had both abnormal DAT availability and P300 amplitude, suggesting that ADHD is linked to dysfunction of the central dopaminergic system and poor cognitive processes related to response selection and execution.

Late Positive Event-Related Potentials after Commissural Section in Humans

1990 ◽  
Vol 2 (3) ◽  
pp. 258-271 ◽  
Author(s):  
Marta Kutas ◽  
Steven A. Hillyard ◽  
Bruce T. Volpe ◽  
Michael S. Gazzaniga
Keyword(s):  
Corpus Callosum ◽  
Left Hemisphere ◽  
Visual Fields ◽  
Event Related Potentials ◽  
Auditory Oddball ◽  
Oddball Task ◽  
Related Potentials ◽  
The Individual ◽  
The Right ◽  
Auditory Oddball Task

The lateral distribution of the P300 component of the event-related brain potential (ERP) was studied in five epileptic patients whose corpus callosum had been surgically sectioned and in seven neurologically intact controls. The P300 was elicited in an auditory “oddball” task using high- and low-pitched tones and in a visual oddball task in which target words were presented either to the left or right visual fields, or to both fields simultaneously. Commissurotomy altered the normal pattern of bilaterally symmetrical P300 waves over the left and right hemispheres, but in a different manner for auditory and visual stimuli. The auditory P3 to binaural tones was larger in amplitude over the right than the left hemisphere for the patients. In the visual task, the laterality of the P300 varied with the visual field of the target presentation. Left field targets elicited much larger P300 amplitudes over the right than the left hemisphere, as did bilateral targets. In contrast, right field targets triggered P300 waves of about the same amplitude over the two hemispheres. The overall amplitude of the P300 to simultaneous bilateral targets was less than the sum of the individual P300 amplitudes produced in response to the unilateral right and left field targets. These shifts in P300 laterality argue against the view that the P300 is an index of diffuse arousal or activation that is triggered in both hemispheres simultaneously irrespective of which hemisphere processes the target information. The results further demonstrate that the P300 does not depend for its production on interhemispheric comparisons of information mediated by the corpus callosum, as suggested recently by Knight et al. (1989).

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