Predictive power of the auditory system
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1
Institute for Psychology I, University of Leipzig, Germany
For obvious reasons, seriality is of outmost importance in the motor / action domain. The convergence of information from the central nervous system towards the motor system and the reduction of free parameters towards the limbs require the planning and execution of motor acts to be organized along the time axis. Moreover, this inherent seriality of the motor system includes anticipating the effects of one`s own actions, being in the service of successful adaptive behavior. However, seriality is also important in the auditory system. As acoustic information unfolds in time, the reconstruction of auditory objects (i.e. computation of the number, spatial position, and identity of active sound sources including the meaning of spoken language) involves the exploitation of seriality on many different time scales. Although less acknowledged than in the motor / action system, anticipatory aspects also play an important role in audition (e.g., Denham & Winkler, 2006). Firstly, we will show evidence that the system underlying MMN generation makes predictions about forthcoming sounds as they evolve over time (Grimm & Schröger, 2007, Restorative Neuroscience and Neurology). Secondly, this inherent seriality might impose a serious constraint to the MMN-system. We (Schröger & Roeber, in preparation) show evidence that the (predictive) power of the MMN-system is indeed seriously impaired when this seriality is destroyed, that is, when the rule is not serially deterministic but serially stochastic. Thirdly, we (Bäß, Widmann, Roye, Schröger, & Jacobsen, in press, European Journal of Neuroscience) could show the predictive power of the auditory system with a completely different experimental approach yielding attenuated brain responses elicited by self- as compared with externally generated sounds. In sum, all of these studies point to the importance of predictions in auditory processing. We propose that this property is not a side-issue of the auditory system but one of its essential characteristics which comes into play regularly. Thus, to our opinion, it deserves more research than it did receive previously.
Conference:
MMN 09
Fifth Conference on Mismatch Negativity (MMN) and its Clinical and Scientific Applications, Budapest, Hungary, 4 Apr - 7 Apr, 2009.
Presentation Type:
Oral Presentation
Topic:
Symposium 2: Predictive models within and of MMN
Citation:
Schröger
E
(2009). Predictive power of the auditory system.
Conference Abstract:
MMN 09
Fifth Conference on Mismatch Negativity (MMN) and its Clinical and Scientific Applications.
doi: 10.3389/conf.neuro.09.2009.05.019
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Received:
19 Mar 2009;
Published Online:
19 Mar 2009.
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Correspondence:
Erich Schröger, Institute for Psychology I, University of Leipzig, Leipzig, Germany, .schroger@uni-leipzig.de