For Publishers
DiscoveryMetadataPeer reviewHostingPublishing
For Researchers
JoinPublishReviewCollect
Register
Blog
About
Search
Advanced search
My ScienceOpen
Search
For Publishers
For Researchers
Blog
About
10
views
37
references
 Top references
cited by
10
    
0 reviews
 Review
0
comments
 Comment
0
recommends
+1 Recommend
0 collections
    0
    shares
      346
      similar
       All similar
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Activation of Brain Attention Systems in Individuals with Symptoms of ADHD

      research-article

      Read this article at

      ScienceOpenPublisherPMC
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Previous research investigating attention and impulse control in individuals with Attention-Deficit/Hyperactivity Disorder (ADHD) has largely ignored the symptomatic differences among the three subtypes of ADHD: ADHD-Inattentive Type, ADHD-Hyperactive/Impulsive Type, and ADHD-Combined Type. The present study examined attention and impulse control by focusing on these subtypes. Based on their self-reported symptoms of ADHD, participants belonged to one of four groups: ADHD-Inattentive, ADHD-Hyperactive/Impulsive, ADHD-Combined, and control. Cortical activity was recorded from participants during performance of a Go/NoGo task. The event-related potentials (ERP) measured at frontal and posterior sites discriminated between the control group and participants with symptoms of ADHD. The control group consistently exhibited a higher P3 amplitude than all the ADHD groups. The main difference occurred at the frontal site, indicating that individuals with ADHD symptoms have deficits in the anterior attentional system, which mediates signal detection. Behavioral measures of signal sensitivity revealed that the ADHD-Inattentive and the ADHD-Hyperactive/Impulsive groups had more difficulty with the attention-demanding Go/NoGo respond-to-target task, while behavioral measures of response bias indicated that the ADHD-Hyperactive/Impulsive and the ADHD-Combined groups responded more liberally in the inhibition-demanding Go/NoGo suppress-to-target task.

          Related collections

          Most cited references37

          • Record: found
          • Abstract: not found
          • Article: not found

          Is the P300 component a manifestation of context updating?

          Emanuel Donchin, Michael Coles (1988)
          Article 0 comments Cited 428 times – based on 0 reviews     Review now
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            On the utility of P3 amplitude as a measure of processing capacity.

            ALBERT KOK (2001)
            The present review focuses on the utility of the amplitude of P3 of as a measure of processing capacity and mental workload. The paper starts with a brief outline of the conceptual framework underlying the relationship between P3 amplitude and task demands, and the cognitive task manipulations that determine demands on capacity. P3 amplitude results are then discussed on the basis of an extensive review of the relevant literature. It is concluded that although it has often been assumed that P3 amplitude depends on the capacity for processing task relevant stimuli, the utility of P3 amplitude as a sensitive and diagnostic measure of processing capacity remains limited. The major factor that prompts this conclusion is that the two principal task variables that have been used to manipulate capacity allocation, namely task difficulty and task emphasis, have opposite effects on the amplitude of P3. I suggest that this is because, in many tasks, an increase in difficulty transforms the structure or actual content of the flow of information in the processing systems, thereby interfering with the very processes that underlie P3 generation. Finally, in an attempt to theoretically integrate the results of the reviewed studies, it is proposed that P3 amplitude reflects activation of elements in a event-categorization network that is controlled by the joint operation of attention and working memory.
            Article 0 comments Cited 379 times – based on 0 reviews     Review now
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Two varieties of long-latency positive waves evoked by unpredictable auditory stimuli in man.

              Nancy K. Squires, Kenneth Squires, Steven A. Hillyard (1975)
              Two distinct late-positive components of the scalp-recorded auditory evoked potential were identified which differed in their latency, scalp topography and psychological correlates. The earlier component, called "P3a" (latency about 240 msec), was elicited by infrequent, unpredictable shifts of either intensity or frequency in a train of tone pips whether the subject was ignoring (reading a book) or attending to the tones (counting). The later component, called "P3a" (mean latency about 350 msec), occurred only when the subject was actively attending to the tones; it was evoked by the infrequent, unpredictable stimulus shifts, regardless of whether the subject was counting that stimulus or the more frequently occurring stimulus. Both of these distinct psychophysiological entities have previously been refered to as the "P3" or "P300" in the literature.
              Article 0 comments Cited 265 times – based on 0 reviews     Review now
                Bookmark
                All references

                Author and article information

                Journal
                Journal ID (nlm-ta): Behav Neurol
                Journal ID (iso-abbrev): Behav Neurol
                Journal ID (publisher-id): BN
                Title: Behavioural Neurology
                Publisher: IOS Press
                ISSN (Print): 0953-4180
                ISSN (Electronic): 1875-8584
                Publication date (Print): 2007
                Publication date (Electronic): 30 May 2007
                Volume: 18
                Issue: 2
                Pages: 115-130
                Affiliations
                1Indiana University South BendINUSA
                2University of South CarolinaColumbiaSCUSA
                Author notes
                *P. Dennis Rodriguez: pdrodrig@ 123456iusb.edu
                Article
                Other ID: 865717
                DOI: 10.1155/2007/865717
                PMC ID: 5469974
                PubMed ID: 17538197
                SO-VID: 9d9b91b9-e38e-4ba4-95a7-a2cb9536e3a1
                Copyright © Copyright © 2007 Hindawi Publishing Corporation and the authors.
                License:

                This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Date received : 25 May 2007
                Date accepted : 25 May 2007
                Categories
                Subject: Research Article

                Keywords: adhd,adhd subtypes,adhd symptoms,attention-deficit/hyperactivity disorder,erp,go/nogo task
                Data availability:
                Keywords: adhd, adhd subtypes, adhd symptoms, attention-deficit/hyperactivity disorder, erp, go/nogo task

                Comments

                Comment on this article

                scite_

                Similar content346

                See all similar

                Cited by10

                See all cited by

                Most referenced authors397

                See all reference authors