Ariane Orosz

Publications (2)5.81 Total impact

• Source

  Available from: Beat Meier

  Article: Interference during the implicit learning of two different motor sequences.

  Marianne A Stephan, Beat Meier, Ariane Orosz, Katja Cattapan-Ludewig, Alain Kaelin-Lang
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  ABSTRACT: It has been demonstrated that learning a second motor task after having learned a first task may interfere with the long-term consolidation of the first task. However, little is known about immediate changes in the representation of the motor memory in the early acquisition phase within the first minutes of the learning process. Therefore, we investigated such early interference effects with an implicit serial reaction time task in 55 healthy subjects. Each subject performed either a sequence learning task involving two different sequences, or a random control task. The results showed that learning the first sequence led to only a slight, short-lived interference effect in the early acquisition phase of the second sequence. Overall, learning of neither sequence was impaired. Furthermore, the two processes, sequence-unrelated task learning (i.e. general motor training) and the sequence learning itself did not appear to interfere with each other. In conclusion, although the long-term consolidation of a motor memory has been shown to be sensitive to other interfering memories, the present study suggests that the brain is initially able to acquire more than one new motor sequence within a short space of time without significant interference.
  Experimental Brain Research 07/2009; 196(2):253-61. · 2.39 Impact Factor
• Article: Repeated measurements of learned irrelevance by a novel within-subject paradigm in humans.

  Ariane Orosz, Joram Feldon, Gilad Gal, Andor Simon, Katja Cattapan-Ludewig
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  ABSTRACT: Learned irrelevance (LIrr) refers to the retardation of classical conditioning following preexposure of the to-be-associated stimuli. Healthy volunteers have been tested on three occasions with a new LIrr paradigm avoiding methodological problems which afflict traditional paradigms. A significant LIrr effect was demonstrated on each occasion. Thus, the new paradigm enables repeated measurements of LIrr and might be useful in evaluating long-term effects of medication in psychiatric disorders exhibiting aberrant LIrr.
  Behavioural Brain Research 07/2007; 180(1):1-3. · 3.42 Impact Factor