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Publications (10 of 14) Show all publications
Zora, H., Riad, T., Ylinen, S. & Csépe, V. (2021). Phonological Variations Are Compensated at the Lexical Level: Evidence From Auditory Neural Activity. Frontiers in Human Neuroscience, 15, Article ID 622904.
Open this publication in new window or tab >>Phonological Variations Are Compensated at the Lexical Level: Evidence From Auditory Neural Activity
2021 (English)In: Frontiers in Human Neuroscience, E-ISSN 1662-5161, Vol. 15, article id 622904Article in journal (Refereed) Published
Abstract [en]

Dealing with phonological variations is important for speech processing. This article addresses whether phonological variations introduced by assimilatory processes are compensated for at the pre-lexical or lexical level, and whether the nature of variation and the phonological context influence this process. To this end, Swedish nasal regressive place assimilation was investigated using the mismatch negativity (MMN) component. In nasal regressive assimilation, the coronal nasal assimilates to the place of articulation of a following segment, most clearly with a velar or labial place of articulation, as in utan mej “without me” > [ʉːtam mɛjː]. In a passive auditory oddball paradigm, 15 Swedish speakers were presented with Swedish phrases with attested and unattested phonological variations and contexts for nasal assimilation. Attested variations – a coronal-to-labial change as in utan “without” > [ʉːtam] – were contrasted with unattested variations – a labial-to-coronal change as in utom “except” > ∗[ʉːtɔn] – in appropriate and inappropriate contexts created by mej “me” [mɛjː] and dej “you” [dɛjː]. Given that the MMN amplitude depends on the degree of variation between two stimuli, the MMN responses were expected to indicate to what extent the distance between variants was tolerated by the perceptual system. Since the MMN response reflects not only low-level acoustic processing but also higher-level linguistic processes, the results were predicted to indicate whether listeners process assimilation at the pre-lexical and lexical levels. The results indicated no significant interactions across variations, suggesting that variations in phonological forms do not incur any cost in lexical retrieval; hence such variation is compensated for at the lexical level. However, since the MMN response reached significance only for a labial-to-coronal change in a labial context and for a coronal-to-labial change in a coronal context, the compensation might have been influenced by the nature of variation and the phonological context. It is therefore concluded that while assimilation is compensated for at the lexical level, there is also some influence from pre-lexical processing. The present results reveal not only signal-based perception of phonological units, but also higher-level lexical processing, and are thus able to reconcile the bottom-up and top-down models of speech processing.

National Category
General Language Studies and Linguistics
Identifiers
urn:nbn:se:su:diva-192713 (URN)10.3389/fnhum.2021.622904 (DOI)000648886100001 ()
Available from: 2021-04-28 Created: 2021-04-28 Last updated: 2024-01-17Bibliographically approved
Heldner, M., Riad, T., Sundberg, J., Włodarczak, M. & Zora, H. (2021). Pride and prominence. In: Working Papers in Linguistics: Proceedings of Fonetik 2021. Paper presented at Fonetik 2021, Lund, Sverige, June 8-9, 2021 (pp. 1-6).
Open this publication in new window or tab >>Pride and prominence
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2021 (English)In: Working Papers in Linguistics: Proceedings of Fonetik 2021, 2021, p. 1-6Conference paper, Published paper (Other academic)
Abstract [en]

Given the importance of the entire voice source in prominence expression, this paper aims to explore whether the word accent distinction can be defined by the voice quality dynamics moving beyond the tonal movements.To this end, a list of word accent pairs in Central Swedish were recorded and analysed based on a set of acoustic features extracted from the accelerometer signal. The results indicate that the tonal movements are indeed accompanied by the voice quality dynamics such as intensity, periodicity, harmonic richness and spectral tilt, and suggest that these parameters might contribute to the perception of one vs. two peaks associated with the word accent distinction in this regional variant of Swedish. These results, although based on limited data, are of crucial importance for the designation of voice quality variation as a prosodic feature per se.

Series
Working Papers in Linguistics, ISSN 0280-526X ; 56
National Category
General Language Studies and Linguistics
Research subject
Phonetics
Identifiers
urn:nbn:se:su:diva-204847 (URN)
Conference
Fonetik 2021, Lund, Sverige, June 8-9, 2021
Funder
Swedish Research Council, 2019-02932
Available from: 2022-05-20 Created: 2022-05-20 Last updated: 2022-05-24Bibliographically approved
Zora, H., Rudner, M. & Magnusson, A. K. M. (2020). Concurrent affective and linguistic prosody with the same emotional valence elicits a late positive ERP response. European Journal of Neuroscience, 51, 2236-2249
Open this publication in new window or tab >>Concurrent affective and linguistic prosody with the same emotional valence elicits a late positive ERP response
2020 (English)In: European Journal of Neuroscience, ISSN 0953-816X, E-ISSN 1460-9568, Vol. 51, p. 2236-2249Article in journal (Refereed) Published
Abstract [en]

Change in linguistic prosody generates a mismatch negativity response (MMN), indicating neural representation of linguistic prosody, while change in affective prosody generates a positive response (P3a), reflecting its motivational salience. However, the neural response to concurrent affective and linguistic prosody is unknown. The present paper investigates the integration of these two prosodic features in the brain by examining the neural response to separate and concurrent processing by electroencephalography (EEG). A spoken pair of Swedish words-['fa:s epsilon n] phase and ['fa:s epsilon n] damn-that differed in emotional semantics due to linguistic prosody was presented to 16 subjects in an angry and neutral affective prosody using a passive auditory oddball paradigm. Acoustically matched pseudowords['va:s epsilon m] and ['va:s epsilon m]-were used as controls. Following the constructionist concept of emotions, accentuating the conceptualization of emotions based on language, it was hypothesized that concurrent affective and linguistic prosody with the same valence-angry ['fa:s epsilon n] damn-would elicit a unique late EEG signature, reflecting the temporal integration of affective voice with emotional semantics of prosodic origin. In accordance, linguistic prosody elicited an MMN at 300-350 ms, and affective prosody evoked a P3a at 350-400 ms, irrespective of semantics. Beyond these responses, concurrent affective and linguistic prosody evoked a late positive component (LPC) at 820-870 ms in frontal areas, indicating the conceptualization of affective prosody based on linguistic prosody. This study provides evidence that the brain does not only distinguish between these two functions of prosody but also integrates them based on language and experience.

Keywords
electroencephalography, emotion, event-related potential, language, prosody
National Category
Neurosciences Languages and Literature
Identifiers
urn:nbn:se:su:diva-179592 (URN)10.1111/ejn.14658 (DOI)000509972400001 ()31872480 (PubMedID)
Available from: 2020-03-23 Created: 2020-03-23 Last updated: 2022-03-23Bibliographically approved
Persson, J., Szalisznyó, K., Antoni, G., Wall, A., Fällmar, D., Zora, H. & Bodén, R. (2020). Phosphodiesterase 10A levels are related to striatal function in schizophrenia: a combined positron emission tomography and functional magnetic resonance imaging study. European Archives of Psychiatry and Clinical Neuroscience, 270(4), 451-459
Open this publication in new window or tab >>Phosphodiesterase 10A levels are related to striatal function in schizophrenia: a combined positron emission tomography and functional magnetic resonance imaging study
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2020 (English)In: European Archives of Psychiatry and Clinical Neuroscience, ISSN 0940-1334, E-ISSN 1433-8491, Vol. 270, no 4, p. 451-459Article in journal (Refereed) Published
Abstract [en]

Pharmacological inhibition of phosphodiesterase 10A (PDE10A) is being investigated as a treatment option in schizophrenia. PDE10A acts postsynaptically on striatal dopamine signaling by regulating neuronal excitability through its inhibition of cyclic adenosine monophosphate (cAMP), and we recently found it to be reduced in schizophrenia compared to controls. Here, this finding of reduced PDE10A in schizophrenia was followed up in the same sample to investigate the effect of reduced striatal PDE10A on the neural and behavioral function of striatal and downstream basal ganglia regions. A positron emission tomography (PET) scan with the PDE10A ligand [11C]Lu AE92686 was performed, followed by a 6 min resting-state magnetic resonance imaging (MRI) scan in ten patients with schizophrenia. To assess the relationship between striatal function and neurophysiological and behavioral functioning, salience processing was assessed using a mismatch negativity paradigm, an auditory event-related electroencephalographic measure, episodic memory was assessed using the Rey auditory verbal learning test (RAVLT) and executive functioning using trail-making test B. Reduced striatal PDE10A was associated with increased amplitude of low-frequency fluctuations (ALFF) within the putamen and substantia nigra, respectively. Higher ALFF in the substantia nigra, in turn, was associated with lower episodic memory performance. The findings are in line with a role for PDE10A in striatal functioning, and suggest that reduced striatal PDE10A may contribute to cognitive symptoms in schizophrenia.

Keywords
Phosphodiesterase 10A, Schizophrenia, Striatum, Dopamine, Resting state
National Category
Neurosciences
Identifiers
urn:nbn:se:su:diva-169014 (URN)10.1007/s00406-019-01021-0 (DOI)000531150600006 ()
Available from: 2019-06-07 Created: 2019-06-07 Last updated: 2022-03-23Bibliographically approved
Zora, H., Riad, T. & Ylinen, S. (2019). Prosodically controlled derivations in the mental lexicon. Journal of Neurolinguistics, 52, Article ID 100856.
Open this publication in new window or tab >>Prosodically controlled derivations in the mental lexicon
2019 (English)In: Journal of Neurolinguistics, ISSN 0911-6044, E-ISSN 1873-8052, Vol. 52, article id 100856Article in journal (Refereed) Published
Abstract [en]

Swedish morphemes are classified as prosodically specified or prosodically unspecified, depending on lexical or phonological stress, respectively. Here, we investigate the allomorphy of the suffix -(i)sk, which indicates the distinction between lexical and phonological stress; if attached to a lexically stressed morpheme, it takes a non-syllabic form (-sk), whereas if attached to a phonologically stressed morpheme, an epenthetic vowel is inserted (-isk). Using mismatch negativity (MMN), we explored the neural processing of this allomorphy across lexically stressed and phonologically stressed morphemes. In an oddball paradigm, participants were occasionally presented with congruent and incongruent derivations, created by the suffix -(i)sk, within the repetitive presentation of their monomorphemic stems. The results indicated that the congruent derivation of the lexically stressed stem elicited a larger MMN than the incongruent sequences of the same stem and the derivational suffix, whereas after the phonologically stressed stem a non-significant tendency towards an opposite pattern was observed. We argue that the significant MMN response to the congruent derivation in the lexical stress condition is in line with lexical MMN, indicating a holistic processing of the sequence of lexically stressed stem and derivational suffix. The enhanced MMN response to the incongruent derivation in the phonological stress condition, on the other hand, is suggested to reflect combinatorial processing of the sequence of phonologically stressed stem and derivational suffix. These findings bring a new aspect to the dual-system approach to neural processing of morphologically complex words, namely the specification of word stress.

Keywords
Swedish, Prosody, Derivation, Lexical MMN, Combinatorial MMN, Dual-system
National Category
General Language Studies and Linguistics
Identifiers
urn:nbn:se:su:diva-170887 (URN)10.1016/j.jneuroling.2019.100856 (DOI)000483452600007 ()
Available from: 2019-07-22 Created: 2019-07-22 Last updated: 2022-02-26Bibliographically approved
Zora, H., Rudner, M. & Magnusson, A. (2019). The role of affective and linguistic prosody in the cognitive emotional appraisal of language. In: Abstract book: Fifth International Conference on Cognitive Hearing Science for Communication. Paper presented at CHSCOM2019: 5th International Conference on Cognitive Hearing Science for Communication, Linköping, Sweden, June 9-12, 2019 (pp. 174-174). , Article ID 60.
Open this publication in new window or tab >>The role of affective and linguistic prosody in the cognitive emotional appraisal of language
2019 (English)In: Abstract book: Fifth International Conference on Cognitive Hearing Science for Communication, 2019, p. 174-174, article id 60Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

Prosody offers a unified expression domain for affective and linguistic communication. Affective prosody (e.g., anger vocalization) reflects pre-cognitive processes, whereas linguistic prosody (e.g., lexical tone) is an acquired cognitive skill. In the present study, we explored the interplay between subcortical affective prosody and cortical linguistic cues during emotional appraisal of speech using stereotyped electroencephalography (EEG) responses. We hypothesized that concurrent affective and linguistic prosody with the same valence will evoke a late positive frontal response, reflecting emotional appraisal supported by complex cognitive processing in frontal cortical areas. Using an auditory oddball paradigm, neural responses to a spoken pair of Swedish words that differed in emotional content due to linguistic prosody were investigated as pronounced with an angry and a neutral voice. The results indicate that when co-occurring, affective and linguistic prosody with the same valence elicit a unique late positive response in the frontal region that is distinct from the neural responses of affective and linguistic prosody alone. This study provides experimental evidence that both affective and linguistic prosody contribute synergistically to the cognitive emotional appraisal of language, and highlights the significance of pre-cognitive affective prosody in language processing, having important implications for both language learning and learning through language.

National Category
General Language Studies and Linguistics
Identifiers
urn:nbn:se:su:diva-172905 (URN)
Conference
CHSCOM2019: 5th International Conference on Cognitive Hearing Science for Communication, Linköping, Sweden, June 9-12, 2019
Available from: 2019-09-12 Created: 2019-09-12 Last updated: 2022-02-26Bibliographically approved
Zora, H., Magnusson, A. & Rudner, M. (2018). MMN signatures of symbolic and affective prosody. In: : . Paper presented at 8th Mismatch Negativity conference: MMN from basic science to clinical applications, Helsinki, Finland, June 12-15, 2018.
Open this publication in new window or tab >>MMN signatures of symbolic and affective prosody
2018 (English)Conference paper, Oral presentation with published abstract (Other academic)
National Category
General Language Studies and Linguistics
Identifiers
urn:nbn:se:su:diva-172902 (URN)
Conference
8th Mismatch Negativity conference: MMN from basic science to clinical applications, Helsinki, Finland, June 12-15, 2018
Available from: 2019-09-12 Created: 2019-09-12 Last updated: 2022-02-26Bibliographically approved
Zora, H., Riad, T. & Ylinen, S. (2018). Prosodically controlled suffix alternation in the mental lexicon. In: : . Paper presented at 8th Mismatch Negativity conference: MMN from basic science to clinical applications, Helsinki, Finland, June 12-15, 2018.
Open this publication in new window or tab >>Prosodically controlled suffix alternation in the mental lexicon
2018 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
General Language Studies and Linguistics
Identifiers
urn:nbn:se:su:diva-172903 (URN)
Conference
8th Mismatch Negativity conference: MMN from basic science to clinical applications, Helsinki, Finland, June 12-15, 2018
Available from: 2019-09-12 Created: 2019-09-12 Last updated: 2022-02-26Bibliographically approved
Zora, H., Magnusson, A. & Rudner, M. (2017). The effect of visual deprivation on prosodic processing. In: : . Paper presented at 4th International Conference on Cognitive Hearing Science for Communication, Linköping, Sweden, 18-21 June, 2017.
Open this publication in new window or tab >>The effect of visual deprivation on prosodic processing
2017 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
General Language Studies and Linguistics
Identifiers
urn:nbn:se:su:diva-172904 (URN)
Conference
4th International Conference on Cognitive Hearing Science for Communication, Linköping, Sweden, 18-21 June, 2017
Available from: 2019-09-12 Created: 2019-09-12 Last updated: 2022-02-26Bibliographically approved
Zora, H., Riad, T., Schwarz, I.-C. & Heldner, M. (2016). Lexical Specification of Prosodic Information in Swedish: Evidence from Mismatch Negativity. Frontiers in Neuroscience, 10, Article ID 533.
Open this publication in new window or tab >>Lexical Specification of Prosodic Information in Swedish: Evidence from Mismatch Negativity
2016 (English)In: Frontiers in Neuroscience, ISSN 1662-4548, E-ISSN 1662-453X, Vol. 10, article id 533Article in journal (Refereed) Published
Abstract [en]

Like that of many other Germanic languages, the stress system of Swedish has mainly undergone phonological analysis. Recently, however, researchers have begun to recognize the central role of morphology in these systems. Similar to the lexical specification of tonal accent, the Swedish stress system is claimed to be morphologically determined and morphemes are thus categorized as prosodically specified and prosodically unspecified. Prosodically specified morphemes bear stress information as part of their lexical representations and are classified as tonic (i.e., lexically stressed), pretonic and posttonic, whereas prosodically unspecified morphemes receive stress through a phonological rule that is right-edge oriented, but is sensitive to prosodic specification at that edge. The presence of prosodic specification is inferred from vowel quality and vowel quantity; if stress moves elsewhere, vowel quality and quantity change radically in phonologically stressed morphemes, whereas traces of stress remain in lexically stressed morphemes. The present study is the first to investigate whether stress is a lexical property of Swedish morphemes by comparing mismatch negativity (MMN) responses to vowel quality and quantity changes in phonologically stressed and lexically stressed words. In a passive oddball paradigm, 15 native speakers of Swedish were presented with standards and deviants, which differed from the standards in formant frequency and duration. Given that vowel quality and quantity changes are associated with morphological derivations only in phonologically stressed words, MMN responses are expected to be greater in phonologically stressed words than in lexically stressed words that lack such an association. The results indicated that the processing differences between phonologically and lexically stressed words were reflected in the amplitude and topography of MMN responses. Confirming the expectation, MMN amplitude was greater for the phonologically stressed word than for the lexically stressed word and showed a more widespread topographic distribution. The brain did not only detect vowel quality and quantity changes but also used them to activate memory traces associated with derivations. The present study therefore implies that morphology is directly involved in the Swedish stress system and that changes in phonological shape due to stress shift cue upcoming stress and potential addition of a morpheme.

Keywords
Swedish stress, morphology, prosody, memory trace, EEG, MMN
National Category
Languages and Literature
Research subject
Linguistics
Identifiers
urn:nbn:se:su:diva-134586 (URN)10.3389/fnins.2016.00533 (DOI)000388649600001 ()
Available from: 2016-10-11 Created: 2016-10-11 Last updated: 2022-03-23Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-4355-1390

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