Negative Blood Oxygen Level Dependent Signals During Speech Comprehension
نویسندگان
چکیده
منابع مشابه
Stabilities of negative correlations between blood oxygen level-dependent signals associated with sensory and motor cortices.
Compared with positive correlations, negative correlations of blood oxygen level-dependent (BOLD) signals (NCOBSs) have been much less studied. In most related studies, the NCOBSs have been accepted as stable without further consideration. To investigate the stabilities of NCOBSs associated with the auditory, motor, and visual cortices, we evaluated the negative correlation maps of each brain r...
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Functional magnetic resonance imaging (fMRI) techniques are based on the assumption that changes in spike activity are accompanied by modulation in the blood oxygenation level-dependent (BOLD) signal. In addition to conventional increases in BOLD signals, sustained negative BOLD signal changes are occasionally observed and are thought to reflect a decrease in neural activity. In this study, the...
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ژورنال
عنوان ژورنال: Brain Connectivity
سال: 2015
ISSN: 2158-0014,2158-0022
DOI: 10.1089/brain.2014.0272