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The Role of the Dorsolateral Prefrontal Cortex for Speech and Language Processing
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In: Front Hum Neurosci (2021)
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New Developments in Understanding the Complexity of Human Speech Production
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Network Modeling for Functional Magnetic Resonance Imaging (fMRI) Signals during Ultra-Fast Speech Comprehension in Late-Blind Listeners
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Experience-Related Structural Changes of Degenerated Occipital White Matter in Late-Blind Humans – A Diffusion Tensor Imaging Study
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The role of pre-SMA for time-critical speech perception : a transcranial magnetic stimulation (TMS) study
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Brain mechanisms of acoustic communication in humans and nonhuman primates: An evolutionary perspective
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In: Behavioral and Brain Sciences (2014)
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Phylogenetic reorganization of the basal ganglia: A necessary, but not the only, bridge over a primate Rubicon of acoustic communication
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In: Behavioral and Brain Sciences (2014)
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Abstract:
In this response to commentaries, we revisit the two main arguments of our target article. Based on data drawn from a variety of research areas – vocal behavior in nonhuman primates, speech physiology and pathology, neurobiology of basal ganglia functions, motor skill learning, paleoanthropological concepts – the target article, first, suggests a two-stage model of the evolution of the crucial motor prerequisites of spoken language within the hominin lineage: (1) monosynaptic refinement of the projections of motor cortex to brainstem nuclei steering laryngeal muscles, and (2) subsequent “vocal-laryngeal elaboration” of cortico-basal ganglia circuits, driven by human-specific FOXP2 mutations. Second, as concerns the ontogenetic development of verbal communication, age-dependent interactions between the basal ganglia and their cortical targets are assumed to contribute to the time course of the acquisition of articulate speech. Whereas such a phylogenetic reorganization of cortico-striatal circuits must be considered a necessary prerequisite for ontogenetic speech acquisition, the 30 commentaries – addressing the whole range of data sources referred to – point at several further aspects of acoustic communication which have to be added to or integrated with the presented model. For example, the relationships between vocal tract movement sequencing – the focus of the target article – and rhythmical structures of movement organization, the connections between speech motor control and the central-auditory and central-visual systems, the impact of social factors upon the development of vocal behavior (in nonhuman primates and in our species), and the interactions of ontogenetic speech acquisition – based upon FOXP2-driven structural changes at the level of the basal ganglia – with preceding subvocal stages of acoustic communication as well as higher-order (cognitive) dimensions of phonological development. Most importantly, thus, several promising future research directions unfold from these contributions – accessible to clinical studies and functional imaging in our species as well as experimental investigations in nonhuman primates.
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Keyword:
ddc:150; ddc:400; ddc:610; Phonetik und Sprachverarbeitung
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URL: https://epub.ub.uni-muenchen.de/59172/ http://nbn-resolving.de/urn:nbn:de:bvb:19-epub-59172-3 https://epub.ub.uni-muenchen.de/59172/1/Ackermann_u.a._Phylogenetic_reorganization.pdf https://doi.org/10.1017/S0140525X1400003X
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Cortical and fibre tract interrelations in conduction aphasia
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In: Aphasiology. - 28, 10 (2014) , 1151-1167, ISSN: 0268-7038 (2014)
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Training of ultra-fast speech comprehension induces functional reorganization of the central-visual system in late-blind humans
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How can audiovisual pathways enhance the temporal resolution of time-compressed speech in blind subjects?
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Magnetic brain activity phase-locked to the envelope, the syllable onsets, and the fundamental frequency of a perceived speech signal
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