[en] Human memory is an enigmatic component of cognition which many researchers have attempted to comprehend. Accumulating studies on functional connectivity see brain as a complex dynamic unit with positively and negatively correlated networks in perfect coherence during a task. We aimed to examine coherence of network connectivity during visual memory encoding and retrieval in the context of education. School Educated (SE) and College Educated (CE) healthy volunteers (n = 60) were recruited and assessed for visual encoding and retrieval. Functional connectivity using seed to voxel based connectivity analysis of the posterior cingulate cortex (PCC) was evaluated. We noticed that there were reciprocal dynamic changes in both dorsolateral prefrontal cortex (DLPFC) region and PCC regions during working memory encoding and retrieval. In agreement with the previous studies, there were more positively correlated regions during retrieval compared to encoding. The default mode network (DMN) networks showed greater negative correlations during more attentive task of visual encoding. In tune with the recent studies on cognitive reserve we also found that number of years of education was a significant factor influencing working memory connectivity. SE had higher positive correlation to DLPFC region and lower negative correlation to DMN in comparison with CE during encoding and retrieval.
Disciplines :
Neurosciences & behavior
Author, co-author :
Panda, Rajanikant ; Université de Liège - ULiège > GIGA Consciousness - Coma Science Group
Bharath, Rose Dawn; National Institute of Mental Health and Neuro Science
George, Lija; National Institute of Mental Health and Neuro Science
Kanungo, Silpa; National Institute of Mental Health and Neuro Science
Reddy, Rajakumari P.; National Institute of Mental Health and Neuro Science
Upadhyay, Neeraj; National Institute of Mental Health and Neuro Science
Thamodharan, Arumugam; National Institute of Mental Health and Neuro Science
Rajeshwaran, Jamuna; National Institute of Mental Health and Neuro Science
Rao, Shobini L.; National Institute of Mental Health and Neuro Science
Gupta, Arun Kumar; National Institute of Mental Health and Neuro Science
Language :
English
Title :
Unraveling Brain Functional Connectivity of encoding and retrieval in the context of education
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