Neural activation and memory for natural scenes: Explicit and spontaneous retrieval

• DOI: 10.1111/psyp.13197
• Publication Date: 2018-05-07T04:50:33Z
• Authors: Mathias Weymar; Margaret M. Bradley; Christopher T. Sege; Peter J. Lang
• Keywords: Posterior cingulate; Cuneus; Angular gyrus; Stimulus (psychology); Parietal lobe; Lingual gyrus

Stimulus repetition elicits either enhancement or suppression in neural activity, and a recent fMRI meta-analysis of effects for visual stimuli (Kim, 2017) reported cross-stimulus medial lateral parietal cortex, as well regions prefrontal, temporal, posterior cingulate cortex. Repetition was assessed here repeated novel scenes presented the context an explicit episodic recognition task implicit judgment task, order to study role spontaneous retrieval memories. Regardless whether memory explicitly probed not, found (precuneus/cuneus), cortex (angular gyrus), prefrontal (frontopolar), which did not differ by task. Enhancement were significantly larger during compared primarily due lack functional activity new scenes. Taken together, data are consistent with interpretation that (ventral) associated retrieval, whereas cortical may reflect decision processes.