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Degree of Brain Connectivity Predicts Eye-Tracking Variability
서민아,Rachel A. Kolster,Sumit Niogi,Bruce D. McCandliss,Richard B. Ivry,Henning U. Voss,Ranjeeta Sarkar,Jamshid Ghajar 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.6
Mild traumatic brain injury (mTBI) is commonly associated with diffse axonal injury (DAI), as well as performance variability and attention and working memory deficits. A visual tracking task with concurrent working memory loading may induce differential effects on performance variability among mTBI patients with varying degrees of DAI and therefore different degrees of brain connectivity. Using a multi-linear regression technique, we examined correlations between white matter integrity as detected by magnetic resonance diffusion tensor imaging and eye tracking variability under a working memory load in mTBI patients. The impact of increased working memory load on tracking variability was correlated with the degree of white matter integrity. Our results suggest that eye tracking variability under working memory loading may be used to assess the degree of DAI in mTBI patients.