Enhanced transformation of incidentally learned knowledge into explicit memory by dopaminergic modulation
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Enhanced transformation of incidentally learned knowledge into explicit memory by dopaminergic modulation. / Clos, Mareike; Sommer, Tobias; Schneider, Signe L; Rose, Michael.
in: PLOS ONE, Jahrgang 13, Nr. 6, 2018, S. e0199013.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Enhanced transformation of incidentally learned knowledge into explicit memory by dopaminergic modulation
AU - Clos, Mareike
AU - Sommer, Tobias
AU - Schneider, Signe L
AU - Rose, Michael
PY - 2018
Y1 - 2018
N2 - During incidental learning statistical regularities are extracted from the environment without the intention to learn. Acquired implicit memory of these regularities can affect behavior in the absence of awareness. However, conscious insight in the underlying regularities can also develop during learning. Such emergence of explicit memory is an important learning mechanism that is assumed to involve prediction errors in the striatum and to be dopamine-dependent. Here we directly tested this hypothesis by manipulating dopamine levels during incidental learning in a modified serial reaction time task (SRTT) featuring a hidden regular sequence of motor responses in a placebo-controlled between-group study. Awareness for the sequential regularity was subsequently assessed using cued generation and additionally verified using free recall. The results demonstrated that dopaminergic modulation nearly doubled the amount of explicit sequence knowledge emerged during learning in comparison to the placebo group. This strong effect clearly argues for a causal role of dopamine-dependent processing for the development of awareness for sequential regularities during learning.
AB - During incidental learning statistical regularities are extracted from the environment without the intention to learn. Acquired implicit memory of these regularities can affect behavior in the absence of awareness. However, conscious insight in the underlying regularities can also develop during learning. Such emergence of explicit memory is an important learning mechanism that is assumed to involve prediction errors in the striatum and to be dopamine-dependent. Here we directly tested this hypothesis by manipulating dopamine levels during incidental learning in a modified serial reaction time task (SRTT) featuring a hidden regular sequence of motor responses in a placebo-controlled between-group study. Awareness for the sequential regularity was subsequently assessed using cued generation and additionally verified using free recall. The results demonstrated that dopaminergic modulation nearly doubled the amount of explicit sequence knowledge emerged during learning in comparison to the placebo group. This strong effect clearly argues for a causal role of dopamine-dependent processing for the development of awareness for sequential regularities during learning.
KW - Journal Article
U2 - 10.1371/journal.pone.0199013
DO - 10.1371/journal.pone.0199013
M3 - SCORING: Journal article
C2 - 29902226
VL - 13
SP - e0199013
JO - PLOS ONE
JF - PLOS ONE
SN - 1932-6203
IS - 6
ER -