Identification of emotional intonation evaluated by fMRI
- D. Wildgruber, A. Riecker, H. Ackermann
- Psychology, BiologyNeuroImage
- 15 February 2005
Opposite hemispheric lateralization effects during speaking and singing at motor cortex, insula and cerebellum
- A. Riecker, H. Ackermann, D. Wildgruber, G. Dogil, W. Grodd
- Biology, PsychologyNeuroReport
- 26 June 2000
Findings corroborate the assumption that the left insula supports the coordination of speech articulation and suggest that the right insula might mediate temporo-spatial control of vocal tract musculature during overt singing.
fMRI reveals two distinct cerebral networks subserving speech motor control
- A. Riecker, K. Mathiak, H. Ackermann
- Biology, PsychologyNeurology
- 22 February 2005
Evidence is provided for two levels of speech motor control bound, most presumably, to motor preparation and execution processes, which help to explain clinical observations such as an unimpaired or even accelerated speaking rate in Parkinson disease and slowed speech tempo, which does not fall below a rate of 3 Hz, in cerebellar disorders.
Cerebral processing of linguistic and emotional prosody: fMRI studies.
- D. Wildgruber, H. Ackermann, B. Kreifelts, T. Ethofer
- Psychology, BiologyProgress in Brain Research
- 2006
Articulatory/Phonetic Sequencing at the Level of the Anterior Perisylvian Cortex: A Functional Magnetic Resonance Imaging (fMRI) Study
- A. Riecker, H. Ackermann, W. Grodd
- Biology, PsychologyBrain and Language
- 1 November 2000
There is neurophysiological evidence that primary sensorimotor cortex mediates the "fractionation" of movements, which may explain the clinical observation of disproportionately worse repetition of trisyllabic items as compared to monosyllables in apraxia of speech.
The contribution of the insula to motor aspects of speech production: A review and a hypothesis
- H. Ackermann, A. Riecker
- Biology, PsychologyBrain and Language
- 1 May 2004
Articulatory deficits in parkinsonian dysarthria: an acoustic analysis.
- H. Ackermann, W. Ziegler
- PsychologyJournal of Neurology Neurosurgery & Psychiatry
- 1 December 1991
The results indicate that motor planning of speech differs from arm movement control, and articulatory "undershoot" was not uniform but influenced by linguistic demands in that the closures associated with a stressed syllable were performed at the expense of unstressed ones.
Emotional processing following cortical and subcortical brain damage: contribution of the fronto-striatal circuitry.
- C. Breitenstein, I. Daum, H. Ackermann
- Psychology, BiologyBehavioural Neurology
- 1998
Only patients in the more advanced stages of Parkinson's disease and patients with focal damage to the (right) frontal lobe differed significantly from controls in both facial expression and affective prosody recognition, implying involvement of the fronto-striatal circuitry in emotional processing.
Cerebellar contributions to speech production and speech perception: psycholinguistic and neurobiological perspectives
- H. Ackermann
- Biology, PsychologyTrends in Neurosciences
- 1 June 2008
Differential Contributions of Motor Cortex, Basal Ganglia, and Cerebellum to Speech Motor Control: Effects of Syllable Repetition Rate Evaluated by fMRI
- D. Wildgruber, H. Ackermann, W. Grodd
- Biology, PsychologyNeuroImage
- 31 January 2001
Functional magnetic resonance imaging findings corroborate the suggestion of a differential impact of various cortical and subcortical areas on speech motor control.
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