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    "original_url": "https:\/\/pubmed.ncbi.nlm.nih.gov\/16880131\/",
    "parsed_content": "Full text links\n CiteDisplay options\n Display options\n \n Format\n AbstractPubMedPMID\n \n \n \n \n \n Abstract\n \n \n \n \n \n \n \n \n \n \n \n Novelty exploration can enhance hippocampal plasticity in animals through dopaminergic neuromodulation arising in the substantia nigra\/ventral tegmental area (SN\/VTA). This enhancement can outlast the exploration phase by several minutes. Currently, little is known about dopaminergic novelty processing and its relationship to hippocampal function in humans. In two functional magnetic resonance imaging (fMRI) studies, SN\/VTA activations in humans were indeed driven by stimulus novelty rather than other forms of stimulus salience such as rareness, negative emotional valence, or targetness of familiar stimuli, whereas hippocampal responses were less selective. SN\/VTA novelty responses were scaled according to absolute rather than relative novelty in a given context, unlike adaptive SN\/VTA responses recently reported for reward outcome in animal studies. Finally, novelty enhanced learning and perirhinal\/parahippocampal processing of familiar items presented in the same context. Thus, the human SN\/VTA can code absolute stimulus novelty and might contribute to enhancing learning in the context of novelty.\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n PubMed Disclaimer\n \n \n \n \n \n \n \n \n \n \n Similar articles\n \n \n Personality traits are differentially associated with patterns of reward and novelty processing in the human substantia nigra\/ventral tegmental area.\n \n Krebs RM, Schott BH, D\u00fczel E.Krebs RM, et al.Biol Psychiatry. 2009 Jan 15;65(2):103-10. doi: 10.1016\/j.biopsych.2008.08.019. Epub 2008 Oct 2.Biol Psychiatry. 2009.PMID: 18835480\n \n Striatal and midbrain connectivity with the hippocampus selectively boosts memory for contextual novelty.\n \n Kafkas A, Montaldi D.Kafkas A, et al.Hippocampus. 2015 Nov;25(11):1262-73. doi: 10.1002\/hipo.22434. Epub 2015 Apr 9.Hippocampus. 2015.PMID: 25708843Free PMC article.\n \n A close relationship between verbal memory and SN\/VTA integrity in young and older adults.\n \n D\u00fczel S, Sch\u00fctze H, Stallforth S, Kaufmann J, Bodammer N, Bunzeck N, M\u00fcnte TF, Lindenberger U, Heinze HJ, D\u00fczel E.D\u00fczel S, et al.Neuropsychologia. 2008 Nov;46(13):3042-52. doi: 10.1016\/j.neuropsychologia.2008.06.001. Epub 2008 Jun 12.Neuropsychologia. 2008.PMID: 18601938\n \n NOvelty-related motivation of anticipation and exploration by dopamine (NOMAD): implications for healthy aging.\n \n D\u00fczel E, Bunzeck N, Guitart-Masip M, D\u00fczel S.D\u00fczel E, et al.Neurosci Biobehav Rev. 2010 Apr;34(5):660-9. doi: 10.1016\/j.neubiorev.2009.08.006. Epub 2009 Aug 26.Neurosci Biobehav Rev. 2010.PMID: 19715723Review.\n \n The hippocampal-VTA loop: controlling the entry of information into long-term memory.\n \n Lisman JE, Grace AA.Lisman JE, et al.Neuron. 2005 Jun 2;46(5):703-13. doi: 10.1016\/j.neuron.2005.05.002.Neuron. 2005.PMID: 15924857Review.\n See all similar articles\n \n Cited by\n \n \n Brainstem fMRI signaling of surprise across different types of deviant stimuli.\n \n Mazancieux A, Mauconduit F, Amadon A, Willem de Gee J, Donner TH, Meyniel F.Mazancieux A, et al.Cell Rep. 2023 Nov 28;42(11):113405. doi: 10.1016\/j.celrep.2023.113405. 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    "published_at": "2026-09-18T20:06:00+00:00",
    "author_name": "Bunzeck N, D\u00fczel E",
    "site_name": "PubMed",
    "section": null,
    "publisher": "National Center for Biotechnology Information (NCBI)",
    "ai_headline": "Novelty responses in the human substantia nigra\/ventral tegmental area predict enhanced memory for novel events.",
    "ai_simplified_title": "Human SN\/VTA Novelty Responses Predict Enhanced Memory",
    "ai_excerpt": "This research investigates how novelty exploration enhances hippocampal plasticity through dopaminergic neuromodulation in the SN\/VTA in humans. It finds that SN\/VTA activations are driven by stimulus novelty, not other salience forms, and scale with absolute novelty. This mechanism contributes to enhanced learning in novel contexts.",
    "ai_subject_tags": [
        "Neuroscience",
        "Dopamine",
        "Hippocampus",
        "Novelty",
        "Memory",
        "fMRI",
        "Substantia Nigra",
        "Ventral Tegmental Area"
    ],
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