Alan Wrench
@awrench.bsky.social
Developing instrumentation for imaging the tongue. Neuroanatomy and biomechanical models. Pulse-Step model of motor control. Natural sceptic.
Co-registered EMA and ultrasound. From top left: Ultrasound with tongue contour, Ultrasound keypoints, 3D head with EMA sensors, , Spectrogram, Glossogram showing vocal tract constrictions in red cavities in blue, waveform. Movie created by AAA app. Use settings to hear audio.
September 17, 2025 at 3:54 PM
Co-registered EMA and ultrasound. From top left: Ultrasound with tongue contour, Ultrasound keypoints, 3D head with EMA sensors, , Spectrogram, Glossogram showing vocal tract constrictions in red cavities in blue, waveform. Movie created by AAA app. Use settings to hear audio.
x.com/i/status/195...
Video of Prof Takayuki Arai with his vocal tract models at #Interspeech2025
Love this analogue demonstration.
Video of Prof Takayuki Arai with his vocal tract models at #Interspeech2025
Love this analogue demonstration.
August 22, 2025 at 9:56 AM
x.com/i/status/195...
Video of Prof Takayuki Arai with his vocal tract models at #Interspeech2025
Love this analogue demonstration.
Video of Prof Takayuki Arai with his vocal tract models at #Interspeech2025
Love this analogue demonstration.
The work coming out of the Person lab is a must-read for me. www.biorxiv.org/content/10.1...
This new paper shows that cerebellar output neurons encode both predictive and corrective movements, mechanistically linking feedforward and feedback control.
This new paper shows that cerebellar output neurons encode both predictive and corrective movements, mechanistically linking feedforward and feedback control.
August 14, 2025 at 1:14 PM
The work coming out of the Person lab is a must-read for me. www.biorxiv.org/content/10.1...
This new paper shows that cerebellar output neurons encode both predictive and corrective movements, mechanistically linking feedforward and feedback control.
This new paper shows that cerebellar output neurons encode both predictive and corrective movements, mechanistically linking feedforward and feedback control.
Although I no longer subscribe to the Equilibrium Point Hypothesis as currently formulated, this proposal is intriguing.
Almanzor et al. (2025). Self-organising bio-inspired reflex circuits for robust motor coordination in artificial musculoskeletal systems.
iopscience.iop.org/article/10.1...
Almanzor et al. (2025). Self-organising bio-inspired reflex circuits for robust motor coordination in artificial musculoskeletal systems.
iopscience.iop.org/article/10.1...
July 19, 2025 at 1:47 PM
Although I no longer subscribe to the Equilibrium Point Hypothesis as currently formulated, this proposal is intriguing.
Almanzor et al. (2025). Self-organising bio-inspired reflex circuits for robust motor coordination in artificial musculoskeletal systems.
iopscience.iop.org/article/10.1...
Almanzor et al. (2025). Self-organising bio-inspired reflex circuits for robust motor coordination in artificial musculoskeletal systems.
iopscience.iop.org/article/10.1...
Video corresponding to above glossogram. Red line is midsagittal tongue contour automatically estimated using #DeepLabCut Blue line indicates base of mandible to hyoid and purple line indicates base of mandible to short tendon. In collaboration with @drjoanma.bsky.social
May 27, 2025 at 11:52 AM
Video corresponding to above glossogram. Red line is midsagittal tongue contour automatically estimated using #DeepLabCut Blue line indicates base of mandible to hyoid and purple line indicates base of mandible to short tendon. In collaboration with @drjoanma.bsky.social
Glossogram with dark red indicating constriction and blue diagonal (tongue compartment contracted) demonstrating peristaltic transfer of water bolus from oral-pharyngeal. This is easiest to explain as sequential extension of neuromuscular compartments of the tongue.
May 27, 2025 at 11:52 AM
Glossogram with dark red indicating constriction and blue diagonal (tongue compartment contracted) demonstrating peristaltic transfer of water bolus from oral-pharyngeal. This is easiest to explain as sequential extension of neuromuscular compartments of the tongue.
How did I not know this? All avian tongues have a bony cartilaginous structure. A hyoid linkage consisting of articulated paraglossal, basihyal, urohyal, ceratobranchial and epibranchial. Johnston, N. E. (2014). The avian tongue. Golden Gate Audubon Society, San Francisco, CA, Access Oct, 15, 2016.
January 22, 2025 at 3:12 PM
How did I not know this? All avian tongues have a bony cartilaginous structure. A hyoid linkage consisting of articulated paraglossal, basihyal, urohyal, ceratobranchial and epibranchial. Johnston, N. E. (2014). The avian tongue. Golden Gate Audubon Society, San Francisco, CA, Access Oct, 15, 2016.
Ito et al (2025) A collicular map for touch-guided tongue control. Nature, 1-9. www.biorxiv.org/content/10.1...
They observe that lick aiming by mice does not require activity in tongue sensory, premotor and motor cortices, but instead is dependent on a lateral region of the superior colliculus.
They observe that lick aiming by mice does not require activity in tongue sensory, premotor and motor cortices, but instead is dependent on a lateral region of the superior colliculus.
January 5, 2025 at 2:18 PM
Ito et al (2025) A collicular map for touch-guided tongue control. Nature, 1-9. www.biorxiv.org/content/10.1...
They observe that lick aiming by mice does not require activity in tongue sensory, premotor and motor cortices, but instead is dependent on a lateral region of the superior colliculus.
They observe that lick aiming by mice does not require activity in tongue sensory, premotor and motor cortices, but instead is dependent on a lateral region of the superior colliculus.
Inoue et al "A kinematically reasonable mechanism of tongue forward protrusion considering hyoid bone movements."
www.sciencedirect.com/science/arti...
Rightly points out that the role of the hyoid in speech is underinvestigated but the model and method used here is flawed and many questions remain.
www.sciencedirect.com/science/arti...
Rightly points out that the role of the hyoid in speech is underinvestigated but the model and method used here is flawed and many questions remain.
January 4, 2025 at 12:23 PM
Inoue et al "A kinematically reasonable mechanism of tongue forward protrusion considering hyoid bone movements."
www.sciencedirect.com/science/arti...
Rightly points out that the role of the hyoid in speech is underinvestigated but the model and method used here is flawed and many questions remain.
www.sciencedirect.com/science/arti...
Rightly points out that the role of the hyoid in speech is underinvestigated but the model and method used here is flawed and many questions remain.
December 29, 2024 at 11:12 AM
Just published. Special issue: : Select Papers From the 8th International Conference on Speech Motor Control
pubs.asha.org/toc/jslhr/67...
pubs.asha.org/toc/jslhr/67...
November 17, 2024 at 10:30 PM
Just published. Special issue: : Select Papers From the 8th International Conference on Speech Motor Control
pubs.asha.org/toc/jslhr/67...
pubs.asha.org/toc/jslhr/67...
Just published, 'The compartmental Tongue' describes a more refined and functionally relevant lingual anatomy to teach to students. It is accompanied by 3D visual teaching aids. pubs.asha.org/doi/10.1044/20
sketchfab.com/ArticulateIn...
github.com/articulatein...
sketchfab.com/ArticulateIn...
github.com/articulatein...
November 17, 2024 at 10:30 PM
Just published, 'The compartmental Tongue' describes a more refined and functionally relevant lingual anatomy to teach to students. It is accompanied by 3D visual teaching aids. pubs.asha.org/doi/10.1044/20
sketchfab.com/ArticulateIn...
github.com/articulatein...
sketchfab.com/ArticulateIn...
github.com/articulatein...
A little re-post from a year ago to lead off in this place.
November 17, 2024 at 10:30 PM
A little re-post from a year ago to lead off in this place.