The contribution of the insula to motor aspects of speech production: A review and a hypothesis

  title={The contribution of the insula to motor aspects of speech production: A review and a hypothesis},
  author={Hermann Ackermann and Axel Riecker},
  journal={Brain and Language},

The contribution(s) of the insula to speech production: a review of the clinical and functional imaging literature

A relatively small area at the junction of insular and opercular cortex was found sensitive to the phonetic-linguistic structure of verbal utterances, a strong argument for its engagement in articulatory control processes.

Activation of right insular cortex during imaginary speech articulation

The current magnetoencephalography study, in which 12 participants were required to imagine vocalizing a phonogram after a visual cue, was designed to visualize the prearticulatory ‘automatic’ processes corresponding to the motor initiation, suggesting that motor control of speech proceeds from the insular regions.

A systems perspective on the effective connectivity of overt speech production

Dynamic causal modelling (DCM) indicated the highest evidence for a system architecture featuring the insula in a serial position between BA 44 and two parallel nodes (cerebellum/basal ganglia), from which information converges onto the PMC and finally M1.

Author ' s personal copy The somatotopy of speech : Phonation and articulation in the human motor cortex

A sizable literature on the neuroimaging of speech production has reliably shown activations in the orofacial region of the primary motor cortex. These activations have invariably been interpreted as

Task load modulates tDCS effects on language performance

The brain stimulation findings support the neuroimaging literature in that motor participation in phonological processing depends on task nature and show that tDCS effects are modulated by task load relative to the target.

Activity in regions sensitive to auditory speech is modified during speech production: fMRI evidence for an efference copy

Models of speech production postulate that, in order to facilitate rapid and precise control of articulation, the predicted auditory feedback is sent to the auditory system to be compared with

Enhanced insular connectivity with speech sensorimotor regions in trained singers: a resting-state fMRI study

The results of this study support the view that the insula plays a central role in the experience-dependent modulation of sensory integration within the vocal motor system, possibly by optimizing conscious and non-conscious aspects of salience processing associated with singing-related bodily signals.



Opposite hemispheric lateralization effects during speaking and singing at motor cortex, insula and cerebellum

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.

Functional lateralization of speech production at primary motor cortex: a fMRI study.

Functional lateralization of speech production seems to include the precentral gyrus as well as Broca's area in Rolandic cortex.

Differential Contributions of Motor Cortex, Basal Ganglia, and Cerebellum to Speech Motor Control: Effects of Syllable Repetition Rate Evaluated by fMRI

Functional magnetic resonance imaging findings corroborate the suggestion of a differential impact of various cortical and subcortical areas on speech motor control.

Music, Pitch Perception, and the Mechanisms of Cortical Hearing

The fact that mental functions are asymmetrically represented in the cerebral hemispheres of humans has been central to much of the study of the relationship between brain functions and behavior over

Kinematic analysis of articulatory movements in central motor disorders

Using an optoelectronic device, lower lip trajectories during production of sentence utterances in patients with Parkinson's disease, Huntington's disease (HD), cerebellar atrophy (CA), and pseudobulbar palsy (PB) are recorded.

A new brain region for coordinating speech articulation

All patients with articulatory planning deficits had lesions that included a discrete region of the left precentral gyms of the insula, a cortical area beneath the frontal and temporal lobes that seems to be specialized for the motor planning of speech.

Regional cerebral blood flow during object naming and word reading

By several accounts, reading single words may be accomplished either by sequentially transcribing orthographic units into their corresponding sounds (an indirect route), or by directly associating a