Implicit probabilistic sequence learning: Correlated streams and sequence length matter

Walter, Stefan; Meier, Beat (31 March 2016). Implicit probabilistic sequence learning: Correlated streams and sequence length matter. In: 11th Annual Meeting Clinical Neuroscience Bern (CNB) - "Brain Connectivity". University of Bern. 31.03.2016.

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We investigated whether a pure perceptual stream is sufficient for probabilistic sequence learning to occur within a single session or whether correlated streams are necessary, whether learning is affected by the transition probability between sequence elements, and how the sequence length influences learning. In each of three experiments, we used six horizontally arranged stimulus displays which consisted of randomly ordered bigrams xo and ox. The probability of the next possible target location out of two was either .50/.50 or .75/.25 and was marked by an underline. In Experiment 1, a left vs. right key response was required for the x of a marked bigram in the pure perceptual learning condition and a response key press corresponding to the marked bigram location (out of 6) was required in the correlated streams condition (i.e., the ring, middle, or index finger of the left and right hand, respectively). The same probabilistic 3-element sequence was used in both conditions. Learning occurred only in the correlated streams condition. In Experiment 2, we investigated whether sequence length affected learning correlated sequences by contrasting the 3-elements sequence with a 6-elements sequence. Significant sequence learning occurred in all conditions. In Experiment 3, we removed a potential confound, that is, the sequence of hand changes. Under these conditions, learning occurred for the 3-element sequence only and transition probability did not affect the amount of learning. Together, these results indicate that correlated streams are necessary for probabilistic sequence learning within a single session and that sequence length can reduce the chances for learning to occur.

Item Type: Conference or Workshop Item (Paper)
Division/Institute: 07 Faculty of Human Sciences > Institute of Psychology > Experimental Psychology and Neuropsychology
UniBE Contributor: Walter, Stefan Markus and Meier, Beat
Subjects: 100 Philosophy > 150 Psychology
600 Technology > 610 Medicine & health
Language: English
Submitter: Stefan Markus Walter
Date Deposited: 09 Jun 2016 12:20
Last Modified: 09 Jun 2016 12:20
URI: http://boris.unibe.ch/id/eprint/81572

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