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Cognition involves dynamic reconfiguration of functional brain networks at sub-second time scale. A precise tracking of these reconfigurations to categorize visual objects remains elusive. Here, we use dense electroencephalography (EEG) data recorded during naming meaningful (tools, animals…) and scrambled objects from 20 healthy subjects. We combine technique for identifying functional brain networks...
Cognition is a network phenomenon. During cognitive activity, brain networks have to rapidly reorganize on a sub-second time scale. Tracking the dynamics of these networks over this short time duration is an unsolved issue. Here, we propose a new way to tackle this problem by using dense electroencephalography (EEG) recorded during a specific cognitive task: picture naming. We found that the cognitive...
The ability of the brain to categorize or group visual stimuli based on common features is a fundamental principle of cognition. This categorization is very fast and occurs in few millisecond time scales. Due to the excellent temporal resolution, on the order of millisecond, of the Electroencephalogram (EEG), categorization of images containing visual objects can be effectively recognized using Event...
Most of the brain functions are based on interactions between neuronal assemblies distributed within and across distinct cerebral regions. A major challenge in neuroscience is to identify these networks from neuroimaging data. In this paper, we investigate the brain connectivity during a specific cognitive task: spelling the name of an object represented on a picture. By using high-resolution electroencephalography...
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