Callum Ross Lab – Biomechanics and evolution of vertebrate feeding systems

The Ross Lab at the University of Chicago is a collaborative community of scientist-scholars working on the biomechanics, motor control, and evolution of vertebrate feeding systems.

Our goal is to use our science to:

increase understanding of the way feeding systems work
alleviate clinical problems facing people and animals
develop the careers of our community members

We believe that our science is made better by cultivating a laboratory community that:

attends to and supports the professional goals of all of its members, collaborators and allies
includes and welcomes a rich diversity of participants
fosters mutually beneficial collaborations among members, collaborators and allies
treats our experimental subjects ethically, humanely, and respectfully

Research

Craniomandibular biomechanics

Hyolingual biomechanics skull

Evolutionary neuromechanics chart

News

2024 - Dr. Ross publishes paper on primate muscle fiber measurement with Dr. Andrea Taylor and colleagues
Dr. Ross is a coauthor on Dr. Andrea Taylor's new paper on muscle fiber measurement techniques in strepsirrhine and platyrrhine primates. Evidence from this paper suggests that different techniques produce different results, and therefore the purpose of the study should be considered when considering which technique to use. [DOI]

2023 - Alec Wilken co-authors a new paper on prokinesis in the feeding and locomotor systems of parrots
Alec Wilken is on a new paper from Michael Grantosky's Comparative Animal Motion Lab at NYIT. The paper describes how rosy-faced lovebirds use prokinesis during tripedal climbing and mandibular/maxillary adduction, i.e., biting. They report that the maxilla is primarily responsible for generating force during locomotion and the mandible is primarily responsible for generating force during jaw adduction. It suggests that these parrots can alter prokinetic function using modulation of neuromuscular control. [Article]

2023 - New paper from Ross-Hatsopoulos Lab Collaboration
Multiple regions of primate orofacial sensorimotor cortex encode bite force and gape. This paper just out from the Ross-Hatsopoulos collaboration funded by R01 "Neuroplasticity and the role of sensorimotor cortex in control of orofacial function”. R01DE023816-01. [Article]

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Recent Publications

Differences in muscle moment arms lengths, mechanical advantages, and force vector orientations underlie differing optimality criteria between primate feeding and locomotor systems
Granatosky, MC, Ross, CF. Journal of Anatomy. (2020) [DOI]

Connecting the chondrocranium: Biomechanics of the suspensorium in reptiles
Wilken AT, Sellers KC, Cost IN, Rozin RE, Middleton KM, and Holliday CM. Vertebrate Zoology. 70(3): 275-290 (2020) [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]

Muscle architecture dynamics modulate performance of the superficial anterior temporalis muscle during chewing in capuchins
Laird, MF, Granatosky, MC, Taylor, AB, Ross, CF. Scientific Reports. 116:50:00 (2020) [DOI]

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