Tongue movements during chewing and swallowing have been difficult to study because the tongue is hidden in the mouth. We used XROMM data on 3D tongue movements during chewing and swallowing in macaques to test Abd-el-Malek’s hypotheses about tongue twisting during chewing in humans. We are developing computational models of tongue function and evaluating whether similar movements are also seen in other amniotes. Courtney Orsbon developed a workflow to integrate XROMM and DiceCT methods and used these methods to propose a new hydraulic mechanism of tongue base retraction in macaques during swallowing. We are using this workflow in other studies and testing the applicability of this model to other mammals.

Related Publications

A new biomechanical model of the mammal jaw based on load path analysis
Alec T. Wilken, Julia A. Schultz, Zhe-Xi Luo, Callum F. Ross. Journal of Experimental Morphology. jeb-247030 (2024) [PDF] [DOI]

Biomechanical and Cortical Control of Tongue Movements During Chewing and Swallowing
Callum F Ross, JD Laurence-Chasen, Peishu LI, Courtney Orsbon, Nicho Hatsopoulos. Dysphagia. (2023) [PDF] [DOI]

Dynamic finite element modelling of the macaque mandible during a complete mastication gape cycle
Olga Panagiotopoulou, Dale Robinson, Jose Iriarte-Diaz, David Ackland, Andrea B. Taylor and Callum F. Ross. Philosophical Transactions of the Royal Society B. 378: 20220549. (2023) [PDF] [DOI]

Dynamic musculoskeletal functional morphology: Integrating diceCT and XROMM
Orsbon, CP, Gidmark, NJ, Ross, CF. Anatomical Record. 301(2):378-406 (2018) [DOI]

Gape drives regional variation in temporalis architectural dynamics in tufted capuchins
Myra F. Laird, Jose Iriarte-Diaz, Craig D. Byron, Michael C. Granatosky, Andrea B. Taylor and Callum F. Ross. Philosophical Transactions of the Royal Society B. 378: 20220550. (2023) [PDF] [DOI]

Head posture impacts mammalian hyoid position and suprahyoid muscle length: implication for swallowing biomechanics
Peishu Li, Callum F. Ross, Zhe-Xi Luo, Nicholas J. Gidmark. Philosophical Transactions of the Royal Society B. 378: 20220552. (2023) [PDF] [DOI]

Introduction: food processing and nutritional assimilation in animals
Myra F. Laird, Callum F. Ross, Victor Kang, Nicolai Konow. Phil. Trans. R. Soc. B. 378: 20220559 (2023) [DOI]

Loss of tactile feedback impairs feeding performance and consistency of tongue-jaw coordination
Laurence-Chasen, JD, Arce-McShane, FI, Hatsopoulos, NG, Ross, CF. Journal of Oral Rehabilitation. (2022) [DOI]

Multiple regions of sensorimotor cortex encode bite force and gape
Arce-McShane, F; Sessle, BJ, Ram Y; Ross CF; Hatsopoulos NG. Frontiers in Systems Neuroscience. (2023) [PDF] [DOI]

Rhythmic chew cycles with distinct fast and slow phases are ancestral to gnathostomes
Brian A. Richard, Meghan Spence, Mateo Rull-Garza, Yonas Tolosa Roba, Daniel Schwarz, Jason B. Ramsay, J. D. Laurence-Chasen, Callum F. Ross, Nicolai Konow. Philosophical Transactions of the Royal Society B. 378: 20220539. (2023) [PDF] [DOI]

Robust cortical encoding of 3D tongue shape during feeding in macaques
JD Laurence-Chasen, Callum F Ross, Fritzie Arce-McShane, Nicho Hatsopoulos. Nature Communications. Nature Communications | ( 2023) 14:2991 (2023) [PDF] [DOI]

The Kinematics of Proal Chewing in Rats
E.D. McParland, J.K. Mitchell, J.D. Laurence-Chasen, L.C. Aspinwall, O. Afolabi, K. Takahashi, C.F. Ross and N.J. Gidmark. Integrative Organismal Biology. Volume 6, Issue 1, 2024, obae023 (2024) [DOI]

Twist and chew: three dimensional tongue kinematics during chewing in macaque primates
Feilich, K, Laurence-Chasen, JD, Orsbon, C, Gidmark, NJ, Ross, CF. Biology Letters. 17:20210431.20210431 (2021) [DOI]

XROMM and diceCT reveal a hydraulic mechanism of tongue base retraction in swallowing
Orsbon, CP, Gidmark, NJ, Gao, T, Ross, CF. Scientific Reports. 2020 May 19 (2020) [DOI]