Dr Gregory is a speech pathologist with a special research and clinical interest in Functional Neurological Disorders (FND) and gender affirming voice training. She gained her PhD in Neurophysiology in 2002 from Imperial College London. Her achievements in research were recognised in receiving sponsorship in 2004 by Deutsche Bank, Australia, as an "up and coming" young scientist and being awarded "Australian Biophysicist of the Year" by the Australian Biophysical Society in 2006.

A previous ARC Postdoctoral Fellowship holder, Catherine changed careers, completing a Master of Speech Pathology with 1st class honours in 2011. Since then she has worked as a clinical speech pathologist and clinical educator in both private practice and in several hospitals across New South Wales, providing evidence-based assessment and management of voice, swallowing, and communication to outpatients, acute inpatients and nursing homes. In 2018 she became a lecturer and clinical educator at the University of Technology Sydney, following her passion in improving the student learning experience. Her current research includes the use of VR in treatment of Functional Neurological Communication Disorders and the role of interoception in FND.