Brain lateralization and self-reported symptoms of ADHD in a population sample of adults: A dimensional approach
Many clinical studies reported a compromised brain lateralization in patients with Attention-Deficit/Hyperactivity Disorder (ADHD) without being conclusive about whether the deficit existed in the left or right hemisphere. It is well-recognized that studying ADHD dimensionally is more controlled for...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2015-09-01
|
| Series: | Frontiers in Psychology |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fpsyg.2015.01418/full |
| _version_ | 1818970606957232128 |
|---|---|
| author | Saleh M. H. Mohamed Saleh M. H. Mohamed Norbert A. Börger Reint H Geuze Jaap J. Van Der Meere |
| author_facet | Saleh M. H. Mohamed Saleh M. H. Mohamed Norbert A. Börger Reint H Geuze Jaap J. Van Der Meere |
| author_sort | Saleh M. H. Mohamed |
| collection | DOAJ |
| description | Many clinical studies reported a compromised brain lateralization in patients with Attention-Deficit/Hyperactivity Disorder (ADHD) without being conclusive about whether the deficit existed in the left or right hemisphere. It is well-recognized that studying ADHD dimensionally is more controlled for comorbid problems and medication effects, and provides more accurate assessment of the symptoms. Therefore, the present study applied the dimensional approach to test the relationship between brain lateralization and self-reported ADHD symptoms in a population sample. Eighty-five right-handed university students filled in the Conners’ Adult ADHD Rating Scales and performed a lateralization reaction time task. The task consists of two matching conditions: one condition requires nominal identification for letters tapping left hemisphere specialization (Letter Name-Identity condition) and the other one requires physical and visuospatial identification for shapes tapping right hemisphere specialization (Shape Physical-Identity condition). The letters or shapes to be matched are presented in left or right visual field of a fixation cross. For both task conditions, brain lateralization was indexed as the difference in mean reaction time between left and right visual field. Linear regression analyses, controlled for mood symptoms reported by a depression, anxiety and stress scale, showed no relationship between the variables. These findings from a population sample of adults do not support the dimensionality of lateralized information processing deficit in ADHD symptomatology. However, group comparison analyses showed that subjects with high level of inattention symptoms close to or above the clinical cut-off had a reduced right hemisphere processing in the Shape Physical-Identity condition. |
| first_indexed | 2024-12-20T14:39:10Z |
| format | Article |
| id | doaj.art-9218f7865d144f09bd526a955a610023 |
| institution | Directory Open Access Journal |
| issn | 1664-1078 |
| language | English |
| last_indexed | 2024-12-20T14:39:10Z |
| publishDate | 2015-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Psychology |
| spelling | doaj.art-9218f7865d144f09bd526a955a6100232022-12-21T19:37:22ZengFrontiers Media S.A.Frontiers in Psychology1664-10782015-09-01610.3389/fpsyg.2015.01418138660Brain lateralization and self-reported symptoms of ADHD in a population sample of adults: A dimensional approachSaleh M. H. Mohamed0Saleh M. H. Mohamed1Norbert A. Börger2Reint H Geuze3Jaap J. Van Der Meere4University of GroningenBeni-Suef UniversityUniversity of GroningenUniversity of GroningenUniversity of GroningenMany clinical studies reported a compromised brain lateralization in patients with Attention-Deficit/Hyperactivity Disorder (ADHD) without being conclusive about whether the deficit existed in the left or right hemisphere. It is well-recognized that studying ADHD dimensionally is more controlled for comorbid problems and medication effects, and provides more accurate assessment of the symptoms. Therefore, the present study applied the dimensional approach to test the relationship between brain lateralization and self-reported ADHD symptoms in a population sample. Eighty-five right-handed university students filled in the Conners’ Adult ADHD Rating Scales and performed a lateralization reaction time task. The task consists of two matching conditions: one condition requires nominal identification for letters tapping left hemisphere specialization (Letter Name-Identity condition) and the other one requires physical and visuospatial identification for shapes tapping right hemisphere specialization (Shape Physical-Identity condition). The letters or shapes to be matched are presented in left or right visual field of a fixation cross. For both task conditions, brain lateralization was indexed as the difference in mean reaction time between left and right visual field. Linear regression analyses, controlled for mood symptoms reported by a depression, anxiety and stress scale, showed no relationship between the variables. These findings from a population sample of adults do not support the dimensionality of lateralized information processing deficit in ADHD symptomatology. However, group comparison analyses showed that subjects with high level of inattention symptoms close to or above the clinical cut-off had a reduced right hemisphere processing in the Shape Physical-Identity condition.http://journal.frontiersin.org/Journal/10.3389/fpsyg.2015.01418/fullself-reportDimensional approachbrain lateralizationADHD symptomsadults population |
| spellingShingle | Saleh M. H. Mohamed Saleh M. H. Mohamed Norbert A. Börger Reint H Geuze Jaap J. Van Der Meere Brain lateralization and self-reported symptoms of ADHD in a population sample of adults: A dimensional approach Frontiers in Psychology self-report Dimensional approach brain lateralization ADHD symptoms adults population |
| title | Brain lateralization and self-reported symptoms of ADHD in a population sample of adults: A dimensional approach |
| title_full | Brain lateralization and self-reported symptoms of ADHD in a population sample of adults: A dimensional approach |
| title_fullStr | Brain lateralization and self-reported symptoms of ADHD in a population sample of adults: A dimensional approach |
| title_full_unstemmed | Brain lateralization and self-reported symptoms of ADHD in a population sample of adults: A dimensional approach |
| title_short | Brain lateralization and self-reported symptoms of ADHD in a population sample of adults: A dimensional approach |
| title_sort | brain lateralization and self reported symptoms of adhd in a population sample of adults a dimensional approach |
| topic | self-report Dimensional approach brain lateralization ADHD symptoms adults population |
| url | http://journal.frontiersin.org/Journal/10.3389/fpsyg.2015.01418/full |
| work_keys_str_mv | AT salehmhmohamed brainlateralizationandselfreportedsymptomsofadhdinapopulationsampleofadultsadimensionalapproach AT salehmhmohamed brainlateralizationandselfreportedsymptomsofadhdinapopulationsampleofadultsadimensionalapproach AT norbertaborger brainlateralizationandselfreportedsymptomsofadhdinapopulationsampleofadultsadimensionalapproach AT reinthgeuze brainlateralizationandselfreportedsymptomsofadhdinapopulationsampleofadultsadimensionalapproach AT jaapjvandermeere brainlateralizationandselfreportedsymptomsofadhdinapopulationsampleofadultsadimensionalapproach |