DSpace Collection: For Open Access fulltext publications (unpublished works and secondary publications) <b> before your employment at HSU </b> to keep a complete publication list.
https://doi.org/10.24405/4492
For Open Access fulltext publications (unpublished works and secondary publications) <b> before your employment at HSU </b> to keep a complete publication list.
2024-03-19T22:35:42Z
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Preattentive Phonotactic Processing as Indexed by the Mismatch Negativity
https://doi.org/10.24405/14304
Title: Preattentive Phonotactic Processing as Indexed by the Mismatch Negativity
Authors: Jacobsen, Thomas; Steinberg, Johanna; Truckenbrodt, Hubert
Abstract: Processing of an obligatory phonotactic restriction outside the focus of the participants ' attention was investigated by means of ERPs using (reversed) experimental oddball blocks. Dorsal fricative assimilation (DFA) is a phonotactic constraint in German grammar that is violated in *[epsilon x] but not in [ox], [epsilon integral], and [o integral]. These stimulus sequences engage the auditory deviance detection mechanism as reflected by the MMN component of the ERP. In Experiment 1 (n= 16), stimuli were contrasted pairwise such that they shared the initial vowel but differed with regard to the fricative. Phonotactically ill- formed deviants elicited stronger MMN re-sponses than well-formed deviants that differed acoustically in the sameway fromthe standard stimulation but did not contain a phonotactic violation. In Experiment 2 (n = 16), stimuli were contrasted such that they differed with regard to the vowel but shared the fricative. MMN was elicited by the vowel change. An additional, laterMMN response was observed for the phonotactically ill-formed syllable only. This MMN cannot be attributed to any phonetic or segmental difference between standard and deviant. These findings suggest that implicit phonotactic knowledge is activated and applied in preattentive speech processing.
2010-10-01T00:00:00Z
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Beyond demand: Investigating spontaneous evaluation of chord progressions with the affective priming paradigm
https://doi.org/10.24405/14257
Title: Beyond demand: Investigating spontaneous evaluation of chord progressions with the affective priming paradigm
Authors: Müller, Mira; Klein, Julian; Jacobsen, Thomas
Abstract: WE ASSUME THAT EVALUATIVE PROCESSES IN RESPONSE TO musical stimuli can occur spontaneously without explicit demand, and that these responses are important for the emergence of emotions evoked by music. Two versions of the affective priming paradigm served to study spontaneous evaluation of music. In Experiment 1, a lexical decision task (LDT) and in Experiments 2 and 3, an evaluative decision task (EDT) was employed. A total of 20 original four-part, five-chord piano sequences with no specified harmonic resolution were used as primes. During the LDT, congruency in valence of prime-target pairs did not affect response times to the targets. However, for the EDT, significant effects of priming were obtained, indicating that spontaneous evaluations of primes must have occurred. No moderating influences of music expertise or any other person variable on spontaneous evaluation were observed. The diverging results of LDT and EDT point to the possibility that spontaneous evaluative processes are sensitive to context manipulations. Results are discussed with reference to harmonic and semantic priming studies. © 2011 by the Regents of the University of California All Rights Reserved.
2011-09-01T00:00:00Z
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Violation of expectation: neural correlates reflect bases of prediction
https://doi.org/10.24405/14256
Title: Violation of expectation: neural correlates reflect bases of prediction
Authors: Bubic, Andreja; von Cramon, D. Yves; Jacobsen, Thomas; Schröger, Erich; Schubotz, Ricarda I.
Abstract: Setting perceptual expectations can be based on different sources of information that determine which functional networks will be involved in implementing preparatory top-down influences and dealing with situations in which expectations are violated. The goal of the present study was to investigate and directly compare brain activations triggered by violating expectations within two different task contexts. In the serial prediction task, participants monitored ordered perceptual sequences for predefined sequential deviants. In contrast, the target detection task entailed a presentation of stimuli which had to be monitored for predefined nonsequential deviants. Detection of sequential deviants triggered an increase of activity in premotor and cerebellar components of the "standard" sequencing network and activations in additional frontal areas initially not involved in sequencing. This pattern of activity reflects the detection of a mismatch between the expected and presented stimuli, updating of the underlying sequence representation (i.e., forward model), and elaboration of the violation. In contrast, target detection elicited activations in posterior temporal and parietal areas, reflecting an increase in perceptual processing evoked by the nonsequential deviant. The obtained results suggest that distinct functional networks involved in detecting deviants in different contexts reflect the origin and the nature of expectations being violated.
2009-01-01T00:00:00Z
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Familiarity affects the processing of task-irrelevant auditory deviance
https://doi.org/10.24405/14254
Title: Familiarity affects the processing of task-irrelevant auditory deviance
Authors: Jacobsen, Thomas; Schröger, Erich; Winkler, István; Horváth, János
Abstract: The effects of familiarity on auditory change detection on the basis of auditory sensory memory representations were investigated by presenting oddball sequences of sounds while participants ignored the auditory stimuli. Stimulus sequences were composed of sounds that were familiar and sounds that were made unfamiliar by playing the same sounds backward. The roles of frequently presented stimuli (standards) and infrequently presented ones (deviants) were fully crossed. Deviants elicited the mismatch negativity component of the event-related brain potential. We found an enhancement in detecting changes when deviant sounds appeared among familiar standard sounds compared when they were delivered among unfamiliar standards. Familiarity with the deviant sounds also enhanced the change-detection process. We suggest that tuning to familiar items sets up preparatory processes that affect change detection in familiar sound sequences.
2005-11-01T00:00:00Z