Equipment
Acoustics
![Voice range profile with fundamental frequency on x-axis and intensity on y-axis](/cms4/asset/810031CE-075E-FC24-A7299DFE491CD761/vrp_sample[1640132245].jpg)
Acoustic measures can provide objective data on vocal function.
Aerodynamics
![Circumferential mask with two transducers to measure lung pressures and laryngeal airflows](/cms4/asset/810031CE-075E-FC24-A7299DFE491CD761/pas_pic[1640132362].jpg)
Data on lung pressures and laryngeal airflows help to assess physiologic vocal function
Electroglottography
![Non-invasive electrodes placed on the neck to measure the changes in vocal fold contact](/cms4/asset/810031CE-075E-FC24-A7299DFE491CD761/egg-2[1640209779].jpg)
EGG measures vocal fold contact across time.
Laryngeal Imaging
![A high-resolution image of vocal folds on motion using laryngeal endoscopy procedure](/cms4/asset/810031CE-075E-FC24-A7299DFE491CD761/strobe-sample_pic[1640132820].jpg)
Laryngeal endoscopy procedure and stroboscopy technique help to visualize the oral, nasal, and laryngeal structures along with vocal fold motion and function during voicing, breathing, and other vegetative gestures.
Surface Electromyography
![Non-invasive round surface electrodes measure the action potentials of oral and pharyngeal muscles while swallowing](/cms4/asset/810031CE-075E-FC24-A7299DFE491CD761/semg_small[1640211904].jpg)
The sEMG is a non-invasive technique to investigate muscle activity during the swallow function. This can also be used for biofeedback purposes.
![Performing a laryngeal endoscopy on a volunteer](/cms4/asset/810031CE-075E-FC24-A7299DFE491CD761/img-1738_1[1676572853].jpg)
IOPI
![IOPI](/cms4/asset/810031CE-075E-FC24-A7299DFE491CD761/iopii[1692821983].jpg)
Iowa Oral Performance Instrument helps to objectively measure the strength and endurance of two articulators - lips and tongue