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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Education / Faculty of Education >
Peer-reviewed Journal Articles, etc >
Severity of AD/HD symptoms and efficiency of attentional resource allocation
| Title: | Severity of AD/HD symptoms and efficiency of attentional resource allocation |
| Authors: | Sawaki, Risa Browse this author | | Katayama, Jun'ichi Browse this author |
| Keywords: | AD/HD | | Attentional resource allocation | | P300 | | Target | | Non-target | | Three-stimulus oddball paradigm |
| Issue Date: | 16-Oct-2006 |
| Publisher: | Elsevier |
| Journal Title: | Neuroscience Letters |
| Volume: | 407 |
| Issue: | 1 |
| Start Page: | 86 |
| End Page: | 90 |
| Publisher DOI: | 10.1016/j.neulet.2006.08.006 |
| PMID: | 16949203 |
| Abstract: | This study investigated the mechanism that underlies the inefficient allocation of attentional resources in Attention-Deficit/Hyperactivity Disorder (AD/HD). The P300 event-related brain potential (ERP) was elicited from 24 healthy adults using a visual three-stimulus oddball paradigm (standard, 70%; target, 15%; non-target, 15%) and the degree of their AD/HD symptoms was assessed by using AD/HD symptom scales. Target stimulus was a circle and standard stimulus was an “X”. Two task conditions were defined according to the non-target stimulus type (typical or novel): a triangle for the typical condition and colored non-repetitive novel stimuli for the novel condition. In both conditions, target and non-target elicited P300s. A ratio of non-target P300 to target P300 amplitude was used to assess the efficiency of attentional resource allocation; low ratio indicates the efficient allocation of attentional resource. The correlation analysis revealed a strong positive correlation between the AD/HD symptom score and the P300 amplitude ratio in the typical condition (r = .80), while only a weak positive correlation was observed in the novel condition (r = .23). The present study found that the commonality of task-relevant and task-irrelevant information, rather than the stimulus novelty of task-irrelevant information, induces the inefficient allocation of attentional resources in AD/HD. |
| Relation: | http://www.sciencedirect.com/science/journal/03043940 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/15819 |
| Appears in Collections: | 教育学院・教育学研究院 (Graduate School of Education / Faculty of Education) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 片山 順一
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