Daniel Palanker

Retinal Resistivity Mapped by Electrical Resistance Tomography

The paper measures retinal resistivity using electrical resistance tomography in rat retinas, comparing results from commercial and machine learning-based methods.

Biomimetic scaffolds mimic human subretinal debris for preclinical testing of prosthetic vision

This paper develops biomimetic scaffolds to mimic human subretinal debris in animal models, improving the accuracy of preclinical testing for subretinal prostheses.

Electrodeposited Biocompatible Coatings for 3D Electrodes on Retinal Prostheses

The paper develops biocompatible coatings for 3D electrodes on retinal prostheses using electrodeposition and photolithography to protect gold surfaces while preserving functionality.

Eye-tracked Maxwellian illumination system for power-efficient retinal stimulation

The paper presents a retinal stimulation system using eye tracking and a VCSEL array to achieve high optical efficiency and a wide field of view.

Titanium and platinum coatings reduce inflammation induced by gold on subretinal prosthesis

This study shows that gold coatings on subretinal implants cause retinal inflammation and neuronal loss, while platinum and titanium coatings reduce these effects, enabling better visual resolution implants.

Identification of Direct and Network-Mediated Activation of Retinal Ganglion Cells from Visually Evoked Potentials Using Machine Learning

The paper develops a machine learning model to identify retinal ganglion cell activation pathways from visually evoked potentials, avoiding the need for toxic synaptic blockers.

Residual photoreceptors affect the response of a degenerate retina to electrical stimulation

This study shows that residual photoreceptors affect the response of a degenerate retina to electrical stimulation, with implications for improving subretinal prosthesis design.

Maximizing the fidelity of a photovoltaic subretinal prosthesis for human patients

This paper optimizes a 3D electrode design for a photovoltaic subretinal implant to improve visual acuity beyond current clinical devices.

Label-free Imaging of the Reversible Rhodopsin Dynamics in a Living Eye

This paper demonstrates label-free imaging of reversible rhodopsin dynamics in living eyes using optoretinography, revealing microsecond-scale mechanical responses to light stimuli.

Amorphous silicon resistors enable smaller pixels in photovoltaic retinal prosthesis

The paper develops doped amorphous silicon resistors for photovoltaic retinal implants, enabling smaller pixel sizes and improved electric field contrast without reducing photoresponsivity.

Retinal thermometry in-vivo using phase-sensitive optical coherence tomography

This paper demonstrates a method to measure retinal temperature rise in vivo using phase-sensitive OCT, showing differences in thermal deformation between healthy and degenerate retinas.

Enhancing Prosthetic Vision by Upgrade of a Subretinal Photovoltaic Implant in situ

This study upgrades a subretinal photovoltaic implant in rats, improving visual acuity from 100m to 28m pixels.

Accelerated Simulation of Multi-Electrode Arrays Using Sparse and Low-Rank Matrix Techniques

This paper accelerates multi-electrode array simulations using sparse and low-rank matrix techniques, achieving up to 133x speedup with minimal error.

3D electronic implants in subretinal space: long-term follow-up in rodents

This study evaluates long-term biocompatibility and performance of 3D honeycomb-shaped subretinal implants in rats, showing improved stimulation thresholds compared to flat designs.

Three-dimensional electro-neural interfaces electroplated on subretinal prostheses

This paper develops 3D electroplated structures for subretinal prostheses to improve electric field penetration and stimulation efficiency in retinal implants.

Cellular integration with a subretinal honeycomb-shaped prosthesis

The paper demonstrates that retinal neurons migrate into honeycomb-shaped wells of a subretinal prosthesis, enabling selective stimulation of second-order neurons without affecting electrical excitability or causing additional glial stress.

Decoding network-mediated retinal response to electrical stimulation: implications for fidelity of prosthetic vision

The paper compares retinal response fidelity to visual and electrical stimulation using single-cell modeling and decoding, finding that electrical stimulation activates fewer cells, requiring more stimulus presentations for equivalent decoding.

The optoretinogram reveals how human photoreceptors deform in response to light

This paper introduces optoretinogram, a non-invasive method to image light-induced shape changes in human cone photoreceptors in vivo, revealing a biphasic response to light.

How neurons move during action potentials

This study uses high-resolution imaging to show how neurons deform during action potentials, revealing the relationship between electrical signals and mechanical changes.

Performance of Complex Visual Tasks using Simulated Prosthetic Vision via Augmented-Reality Glasses

This study evaluates the performance of complex visual tasks with simulated prosthetic vision using AR glasses, finding that face recognition accuracy exceeds 75% even at low resolution.