Callum F. Ross, PhD

My lab researches the motor control and biomechanics of feeding system. My lab uses electromyography and fluoromicrometry to study feeding muscle function, high speed biplanar videofluoroscopy to study 3d tongue and jaw kinematics, and finite element modelling to study mandible mechanics. We study diverse taxa.



My lab is working on understanding how both the jaw and tongue are moved and controlled during oral behaviors such as drinking, chewing and swallowing.



Dr. Nicho Hatsopoulos and my lab use neural recording techniques to study the role of motor and sensory cortex in control of oral behaviors including chewing and swallowing. We are researching neural encoding of jaw and tongue movements, neuroplasticity associated with learning new oral skills, and, with Dr. Fritzie Arce-McShane, the role of different oral sensory pathways in control of jaw and tongue movement.



My lab and Dr. Zeray Alemseged are using finite-element models of primate jaws to study mandible design in humans, great apes, and fossil hominids.



Dr. Russell Reid in the Department of Surgery and my lab are working with Drs. Olga Panagiotopoulou in Australia and Felippe Prado in Brazil on bioengineering of human jaw function during distraction osteogenesis and fracture repair.

Got rhythm? Rhythmicity differences reflect different optimality criteria in feeding and locomotor systems.
Faltings L, Young MW, Ross CF, Granatosky MC. Got rhythm? Rhythmicity differences reflect different optimality criteria in feeding and locomotor systems. Evolution. 2022 09; 76(9):2181-2190.
PMID: 35862552

Iyuku raathi, a new iguanodontian dinosaur from the Early Cretaceous Kirkwood Formation, South Africa.
Forster CA, de Klerk WJ, Poole KE, Chinsamy-Turan A, Roberts EM, Ross CF. Iyuku raathi, a new iguanodontian dinosaur from the Early Cretaceous Kirkwood Formation, South Africa. Anat Rec (Hoboken). 2022 Jul 21.
PMID: 35860957

Mechanical compensation in the evolution of the early hominin feeding apparatus.
Ledogar JA, Senck S, Villmoare BA, Smith AL, Weber GW, Richmond BG, Dechow PC, Ross CF, Grosse IR, Wright BW, Wang Q, Byron C, Benazzi S, Carlson KJ, Carlson KB, Pryor McIntosh LC, van Casteren A, Strait DS. Mechanical compensation in the evolution of the early hominin feeding apparatus. Proc Biol Sci. 2022 06 08; 289(1976):20220711.
PMID: 35703052

Loss of oral sensation impairs feeding performance and consistency of tongue-jaw coordination.
Laurence-Chasen JD, Arce-McShane FI, Hatsopoulos NG, Ross CF. Loss of oral sensation impairs feeding performance and consistency of tongue-jaw coordination. J Oral Rehabil. 2022 Aug; 49(8):806-816.
PMID: 35514258

Suction feeding biomechanics of Polypterus bichir: investigating linkage mechanisms and the contributions of cranial kinesis to oral cavity volume change.
Whitlow KR, Ross CF, Gidmark NJ, Laurence-Chasen JD, Westneat MW. Suction feeding biomechanics of Polypterus bichir: investigating linkage mechanisms and the contributions of cranial kinesis to oral cavity volume change. J Exp Biol. 2022 02 01; 225(3).
PMID: 35019979

Twist and chew: three-dimensional tongue kinematics during chewing in macaque primates.
Feilich KL, Laurence-Chasen JD, Orsbon C, Gidmark NJ, Ross CF. Twist and chew: three-dimensional tongue kinematics during chewing in macaque primates. Biol Lett. 2021 12; 17(12):20210431.
PMID: 34905722

Morphological disparity and evolutionary transformations in the primate hyoid apparatus.
Li P, Ross CF, Luo ZX. Morphological disparity and evolutionary transformations in the primate hyoid apparatus. J Hum Evol. 2022 01; 162:103094.
PMID: 34808474

Fracture Fixation Technique and Chewing Side Impact Jaw Mechanics in Mandible Fracture Repair.
Mehari Abraha H, Iriarte-Diaz J, Reid RR, Ross CF, Panagiotopoulou O. Fracture Fixation Technique and Chewing Side Impact Jaw Mechanics in Mandible Fracture Repair. JBMR Plus. 2022 Jan; 6(1):e10559.
PMID: 35079674

Grit your teeth and chew your food: Implications of food material properties and abrasives for rates of dental microwear formation in laboratory Sapajus apella (Primates).
Teaford MF, Ross CF, Ungar PS, Vinyard CJ, Laird MF. Grit your teeth and chew your food: Implications of food material properties and abrasives for rates of dental microwear formation in laboratory Sapajus apella (Primates). Palaeogeogr Palaeoclimatol Palaeoecol. 2021 Dec 01; 583.
PMID: 34764513

Comparative biomechanics of the Pan and Macaca mandibles during mastication: finite element modelling of loading, deformation and strain regimes.
Smith AL, Robinson C, Taylor AB, Panagiotopoulou O, Davis J, Ward CV, Kimbel WH, Alemseged Z, Ross CF. Comparative biomechanics of the Pan and Macaca mandibles during mastication: finite element modelling of loading, deformation and strain regimes. Interface Focus. 2021 Oct 06; 11(5):20210031.
PMID: 34938438

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