Luke Helpard
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View article: The Greenwood function shows close alignment with pitch perceived by cochlear implant patients with long, flexible electrode arrays and fine-structure stimulation
The Greenwood function shows close alignment with pitch perceived by cochlear implant patients with long, flexible electrode arrays and fine-structure stimulation Open
Introduction The natural, tonotopic frequency distribution of the inner ear is typically described by the Greenwood function, which logarithmically projects the audible frequency spectrum onto the intracochlear basilar membrane. Recent dev…
View article: Design and characterization of a 3D‐printed axon‐mimetic phantom for diffusion MRI
Design and characterization of a 3D‐printed axon‐mimetic phantom for diffusion MRI Open
Purpose To introduce and characterize inexpensive and easily produced 3D‐printed axon‐mimetic diffusion MRI phantoms in terms of pore geometry and diffusion kurtosis imaging metrics. Methods Phantoms were 3D‐printed with a composite printi…
View article: Three-dimensional tonotopic mapping of the human cochlea based on synchrotron radiation phase-contrast imaging
Three-dimensional tonotopic mapping of the human cochlea based on synchrotron radiation phase-contrast imaging Open
The human cochlea transforms sound waves into electrical signals in the acoustic nerve fibers with high acuity. This transformation occurs via vibrating anisotropic membranes (basilar and tectorial membranes) and frequency-specific hair ce…
View article: Characterization of the human helicotrema: Implications for cochlear duct length and frequency mapping
Characterization of the human helicotrema: Implications for cochlear duct length and frequency mapping Open
Background Despite significant anatomical variation amongst patients, cochlear implant frequency-mapping has traditionally followed a patient-independent approach. Basilar membrane (BM) length is required for patient-specific frequency-map…