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{
    "pk": 28463,
    "title": "The Role of Basal Ganglia Reinforcement Learning in Lexical Priming andAutomatic Semantic Ambiguity Resolution",
    "subtitle": null,
    "abstract": "The current study aimed to elucidate the contributions of thesubcortical basal ganglia to human language by adopting theview that these structures engage in a basic neurocomputationthat may account for its involvement across a wide range of lin-guistic phenomena. Specifically, we tested the hypothesis thatbasal ganglia reinforcement learning mechanisms may accountfor variability in semantic selection processes necessary forambiguity resolution. To test this, we used a biased homographlexical ambiguity priming task that allowed us to measure au-tomatic processes for resolving ambiguity towards high fre-quency word meanings. Individual differences in task perfor-mance were then related to indices of basal ganglia function-ing and reinforcement learning, which were used to group sub-jects by learning style: primarily from choosing positive feed-back (Choosers), primarily from avoiding negative feedback(Avoiders), and balanced participants who learned equally wellfrom both (Balanced). The pattern of results suggests that bal-anced individuals, whom learn from both positive and negativereward equally well, had significantly lower access to the sub-ordinate homograph word meaning. Choosers and Avoiders,on the other hand, had higher access to the subordinate wordmeaning even after a long delay between prime and target. Ex-perimental findings were then tested using an ACT-R compu-tational model of reinforcement learning that learns from bothpositive and negative feedback. Results from the computa-tional model confirm and extend the pattern of behavioral find-ings, and provide a reinforcement learning account of lexicalpriming processes in human linguistic abilities, where a dual-path reinforcement learning system is necessary for preciselymapping out word co-occurrence probabilities.",
    "language": "eng",
    "license": {
        "name": "",
        "short_name": "",
        "text": null,
        "url": ""
    },
    "keywords": [
        {
            "word": "language; semantics; lexical selection; ambigu-ity resolution; priming; reinforcement learning; basal ganglia;dopamine; cognitive modeling; ACT-R"
        }
    ],
    "section": "Papers with Oral Presentations",
    "is_remote": true,
    "remote_url": "https://escholarship.org/uc/item/6r8632cr",
    "frozenauthors": [
        {
            "first_name": "Jose",
            "middle_name": "M.",
            "last_name": "Ceballos",
            "name_suffix": "",
            "institution": "University of Washington",
            "department": ""
        },
        {
            "first_name": "Andrea",
            "middle_name": "",
            "last_name": "Stocco",
            "name_suffix": "",
            "institution": "University of Washington",
            "department": ""
        },
        {
            "first_name": "Chantel",
            "middle_name": "S.",
            "last_name": "Prat",
            "name_suffix": "",
            "institution": "University of Washington",
            "department": ""
        }
    ],
    "date_submitted": null,
    "date_accepted": null,
    "date_published": "2019-01-01T18:00:00Z",
    "render_galley": null,
    "galleys": [
        {
            "label": "PDF",
            "type": "pdf",
            "path": "https://journalpub.escholarship.org/cognitivesciencesociety/article/28463/galley/18334/download/"
        }
    ]
}