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You talkin' to me? Communicative talker gaze activates left-lateralized superior temporal cortex during perception of degraded speech
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Cohesion and joint speech: right hemisphere contributions to synchronized vocal production
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| 3 |
Getting the Cocktail Party Started: Masking Effects in Speech Perception
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Distinct neural systems recruited when speech production is modulated by different masking sounds
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| 5 |
Do We Know What We’re Saying? The Roles of Attention and Sensory Information During Speech Production
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Do sentences with unaccusative verbs involve syntactic movement? Evidence from neuroimaging
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| 7 |
Does musical enrichment enhance the neural coding of syllables? Neuroscientific interventions and the importance of behavioral data
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| 8 |
Articulatory movements modulate auditory responses to speech
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| 9 |
An application of univariate and multivariate approaches in FMRI to quantifying the hemispheric lateralization of acoustic and linguistic processes
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Abstract:
The question of hemispheric lateralization of neural processes is one that is pertinent to a range of subdisciplines of cognitive neuroscience. Language is often assumed to be left-lateralized in the human brain, but there has been a long running debate about the underlying reasons for this. We addressed this problem with fMRI by identifying the neural responses to amplitude and spectral modulations in speech and how these interact with speech intelligibility to test previous claims for hemispheric asymmetries in acoustic and linguistic processes in speech perception. We used both univariate and multivariate analyses of the data, which enabled us to both identify the networks involved in processing these acoustic and linguistic factors and to test the significance of any apparent hemispheric asymmetries. We demonstrate bilateral activation of superior temporal cortex in response to speech-derived acoustic modulations in the absence of intelligibility. However, in a contrast of amplitude-modulated and spectrally modulated conditions that differed only in their intelligibility (where one was partially intelligible and the other unintelligible), we show a left dominant pattern of activation in STS, inferior frontal cortex, and insula. Crucially, multivariate pattern analysis showed that there were significant differences between the left and the right hemispheres only in the processing of intelligible speech. This result shows that the left hemisphere dominance in linguistic processing does not arise because of low-level, speech-derived acoustic factors and that multivariate pattern analysis provides a method for unbiased testing of hemispheric asymmetries in processing.
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URL: https://westminsterresearch.westminster.ac.uk/item/q0589/an-application-of-univariate-and-multivariate-approaches-in-fmri-to-quantifying-the-hemispheric-lateralization-of-acoustic-and-linguistic-processes
https://doi.org/10.1162/jocn_a_00161
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| 10 |
Discriminating between auditory and motor cortical responses to speech and non-speech mouth sounds
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| 11 |
What is the relationship between phonological short-term memory and speech processing?
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In: Trends in Cognitive Sciences , 10 (11) pp. 480-486. (2006) (2006)
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| 12 |
Functional Imaging and Language: a critical guide to methodology and analysis
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In: Speech Communication , 41 (1 ) pp.7 - 21 . (2003) (2003)
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| 13 |
PET and fMRI studies of the neural basis of speech perception
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In: Speech Communication , 41 (1) pp.23 - 34 . (2003) (2003)
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| 14 |
Going beyond the information given: a neural system supporting semantic interpretation
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In: NeuroImage , 19 (3 ) pp.870 - 876 . (2003) (2003)
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| 15 |
Detecting residual cognitive function in persistent vegetative state
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In: Neurocase , 8 (5 ) pp.394 -403 . (2002) (2002)
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| 16 |
Speech production: Wernicke, Broca and beyond
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In: Brain , 125 (8) pp.1829 -1838 . (2002) (2002)
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