PMID- 25972163 OWN - NLM STAT- MEDLINE DCOM- 20150727 LR - 20181113 IS - 1529-2401 (Electronic) IS - 0270-6474 (Print) IS - 0270-6474 (Linking) VI - 35 IP - 19 DP - 2015 May 13 TI - Consolidation of Associative and Item Memory Is Related to Post-Encoding Functional Connectivity between the Ventral Tegmental Area and Different Medial Temporal Lobe Subregions during an Unrelated Task. PG - 7326-31 LID - 10.1523/JNEUROSCI.4816-14.2015 [doi] AB - It is well established that the hippocampus and perirhinal cortex (PrC) encode associative and item representations, respectively. However, less is known about how item and associative memories are consolidated. We used high-resolution fMRI in humans to measure how functional connectivity between these distinct medial temporal lobe regions with the ventral tegmental area (VTA) after a paired associate encoding task is related to both immediate and 24 h item and associative memory performance. We found that the strength of post-encoding functional connectivity between the VTA and CA1 selectively correlated with long-term associative memory, despite subjects actively engaging in an unrelated task during this period. Conversely, VTA-PrC functional connectivity during the same period correlated with long-term item memory. Critically, connectivity between VTA and these MTL regions were only related to memory tested at a 24 h delay, implicating midbrain connectivity in the consolidation of distinct forms of memory. CI - Copyright (c) 2015 the authors 0270-6474/15/357326-06$15.00/0. FAU - Tompary, Alexa AU - Tompary A AD - Department of Psychology and. FAU - Duncan, Katherine AU - Duncan K AD - Department of Psychology, Columbia University, New York, New York 10027. FAU - Davachi, Lila AU - Davachi L AD - Department of Psychology and Center for Neural Science, New York University, New York, New York 10003 and lila.davachi@nyu.edu. LA - eng GR - R01 MH074692/MH/NIMH NIH HHS/United States GR - MH074692/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - United States TA - J Neurosci JT - The Journal of neuroscience : the official journal of the Society for Neuroscience JID - 8102140 RN - S88TT14065 (Oxygen) SB - IM MH - Adult MH - Association Learning/*physiology MH - Brain Mapping MH - Female MH - Humans MH - Image Processing, Computer-Assisted MH - Magnetic Resonance Imaging MH - Male MH - Mathematics MH - Memory/*physiology MH - Neural Pathways/blood supply/*physiology MH - Oxygen/blood MH - Problem Solving/physiology MH - Statistics as Topic MH - Temporal Lobe/blood supply/*physiology MH - Ventral Tegmental Area/blood supply/*physiology MH - Young Adult PMC - PMC4429149 OTO - NOTNLM OT - VTA OT - consolidation OT - functional connectivity OT - high-resolution fMRI OT - medial temporal lobe EDAT- 2015/05/15 06:00 MHDA- 2015/07/28 06:00 PMCR- 2015/11/13 CRDT- 2015/05/15 06:00 PHST- 2015/05/15 06:00 [entrez] PHST- 2015/05/15 06:00 [pubmed] PHST- 2015/07/28 06:00 [medline] PHST- 2015/11/13 00:00 [pmc-release] AID - 35/19/7326 [pii] AID - 4816-14 [pii] AID - 10.1523/JNEUROSCI.4816-14.2015 [doi] PST - ppublish SO - J Neurosci. 2015 May 13;35(19):7326-31. doi: 10.1523/JNEUROSCI.4816-14.2015.