Title |
fNIRS Studies on Hemispheric Asymmetry in Atypical Neural Function in Developmental Disorders
|
---|---|
Published in |
Frontiers in Human Neuroscience, April 2017
|
DOI | 10.3389/fnhum.2017.00137 |
Pubmed ID | |
Authors |
Hirokazu Doi, Kazuyuki Shinohara |
Abstract |
Functional lateralization is highly replicable trait of human neural system. Many previous studies have indicated the possibility that people with attention-deficits/hyperactivity-disorder (ADHD) and autism spectrum disorder (ASD) show hemispheric asymmetry in atypical neural function. However, despite the abundance of relevant studies, there is still ongoing controversy over this issue. In the present mini-review, we provide an overview of the hemispheric asymmetry in atypical neural function observed in fNIRS studies on people with these conditions. Atypical neural function is defined as group-difference in the task-related concentration change of oxygenated hemoglobin. The existing fNIRS studies give support to the right-lateralized atypicalty in children with ADHD. At the same time, we did not find clear leftward-lateralization in atypical activation in people with ASD. On the basis of these, we discuss the current states and limitation of the existing studies. |
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