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Abstract #3528

The Neural Correlates of Everyday Recognition Memory.

Abdelmalek Benattayallah1, Fraser Milton2, Nils Muhlert3, Chris Butler4, Adam Zeman

1Peninsula Medical School, Exeter, Devon, United Kingdom; 2Psychology, University of Exeter, Exeter, Devon, United Kingdom; 3Peninsula Medical School, University of Exeter, Exeter, Devon, United Kingdom; 4University of Oxford

We used an automatic camera, SenseCam, to create a recognition memory test for real-life events. Using fMRI, participants classified images as strongly or weakly remembered, strongly or weakly familiar or novel, 36 hours and 5-6 months after image acquisition. At 36 hours, diverse neocortical regions were activated by recollected and familiar stimuli. There was increasing activation in right hippocampus/ posterior parahippocampal gyrus (pPHG) with increasing memory strength. Strong recollection elicited greater activity in left posterior hippocampus/pPHG than weak recollection. At 5-6 months, MTL activated for familiarity but not recollection memory. Neocortical regions were recruited for both recollection and familiarity processes.