Dopaminergic modulation of semantic network activation
In order to examine the effect of dopamine on semantic processing, we performed a double-blind, placebo-controlled study. Healthy volunteers (n = 31) were tested in a lexical decision paradigm after ingestion of either l-dopa 100 mg with benserazide 25 mg or placebo. While direct semantic priming wa...
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| Hauptverfasser: | , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
1996
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| In: |
Neuropsychologia
Year: 1996, Jahrgang: 34, Heft: 11, Pages: 1107-1113 |
| ISSN: | 1873-3514 |
| DOI: | 10.1016/0028-3932(96)00024-3 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/0028-3932(96)00024-3 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/0028393296000243 
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| Verfasserangaben: | U. Kischka, TH. Kammer, S. Maier, M. Weisbrod, M. Thimm, M. Spitzer |
| Zusammenfassung: | In order to examine the effect of dopamine on semantic processing, we performed a double-blind, placebo-controlled study. Healthy volunteers (n = 31) were tested in a lexical decision paradigm after ingestion of either l-dopa 100 mg with benserazide 25 mg or placebo. While direct semantic priming was influenced only marginally by l-dopa, the indirect priming effect was reduced significantly. These data support the hypothesis that dopamine increases the signal-to-noise ratio in semantic networks by reducing the spread of semantic processing, thereby leading to a focussing of activation. |
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| Beschreibung: | Elektronische Reproduktion der Druck-Ausgabe 19. März 1999 Gesehen am 16.12.2021 |
| Beschreibung: | Online Resource |
| ISSN: | 1873-3514 |
| DOI: | 10.1016/0028-3932(96)00024-3 |