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Korean J Leg Med > Volume 42(4); 2018 > Article
Korean Journal of Legal Medicine 2018;42(4):146-152.
DOI: https://doi.org/10.7580/kjlm.2018.42.4.146    Published online November 30, 2018.
Increased Ventrolateral Prefrontal Cortex Activation during Accurate Eyewitness Memory Retrieval: An Exploratory Functional Near-Infrared Spectroscopy Study.
Keunsoo Ham, Ki Pyoung Kim, Hojin Jeong, Seong Ho Yoo
1Psychological Forensics Division, National Forensic Service, Wonju, Korea. ksham@korea.kr
2Institute of Forensic Medicine and Department of Forensic Medicine, Seoul National University College of Medicine, Seoul, Korea. yoosh@snu.ac.kr
Abstract
We investigated the neural correlates of accurate eyewitness memory retrieval using functional near-infrared spectroscopy. We analyzed oxygenated hemoglobin (HbO₂) concentration in the prefrontal cortex during eyewitness memory retrieval task and examined regional HbO₂ differences between observed objects (target) and unobserved objects (lure). We found that target objects elicited increased activation in the bilateral ventrolateral prefrontal cortex, which is known for monitoring retrieval processing via bottom-up attentional processing. Our results suggest bottom-up attentional mechanisms could be different during accurate eyewitness memory retrieval. These findings indicate that investigating retrieval mechanisms using functional nearinfrared spectroscopy might be useful for establishing an accurate eyewitness recognition model.
Key Words: Memory, Recognition, Spectroscopy, near-infrared, Prefrontal cortex, Cognitive neuroscience
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