Publications de Diego Ghezzi | EPFL Graph Search

A modular multiple frequency inductive link to wirelessly power multiple miniaturized implants

Sandro Carrara, Diego Ghezzi, Gian Luca Barbruni

A modular multiple frequency coils inductive link system to wirelessly provide power for at least a medical implant at an output of a receiving coil, whereby the receiving coil is configured to be implanted in an organism. The modular multiple frequency co ...

2024

An actor-model framework for visual sensory encoding

Demetri Psaltis, Diego Ghezzi, Christophe Moser, Babak Rahmani

A fundamental challenge in neuroengineering is determining a proper artificial input to a sensory system that yields the desired perception. In neuroprosthetics, this process is known as artificial sensory encoding, and it holds a crucial role in prostheti ...

Nature Portfolio2024

A Frequency-Switching Inductive Power Transfer System for Wireless, Miniaturised and Large-Scale Neural Interfaces

Sandro Carrara, Diego Ghezzi, Gian Luca Barbruni

Three-coil inductive power transfer is the state-of-the-art solution to power multiple miniaturised neural implants. However, the maximum delivered power is limited by the efficiency of the powering link and safety constrains. Here we propose a frequency-s ...

Ieee-Inst Electrical Electronics Engineers Inc2024

Wide-angle simulated artificial vision enhances spatial navigation and object interaction in a naturalistic environment

Diego Ghezzi

Objective. Vision restoration approaches, such as prosthetics and optogenetics, provide visual perception to blind individuals in clinical settings. Yet their effectiveness in daily life remains a challenge. Stereotyped quantitative tests used in clinical ...

2024

Bodily implant microelectrode and bodily implant microelectrode fabrication method

Sandro Carrara, Diego Ghezzi, Gian Luca Barbruni

The present invention concerns a bodily implantable or probe device and microelectrode fabrication method comprising providing at least one silicon substrate including an electronic device or unit; providing, on a first side of the silicon substrate, at le ...

2024

In vivo recording of visually evoked potentials with novel full diamond ECoG implants

Diego Ghezzi, Eleonora Borda

Implantable neuroprosthetic devices such as electrocorticography (ECoG) and intracortical microelectrodes have the potential to restore neurological functions in disabled individuals. They constitute the direct interface with the body and require long term ...

2024

The role of the visual field size in artificial vision

Diego Ghezzi

Objective. Artificial vision has been and still is the subject of intense research. The ultimate goal is to help blind people in their daily life. Approaches to artificial vision, including visual prostheses and optogenetics, have strongly focused on resto ...

IOP Publishing Ltd2023

An Ultra-Miniaturised CMOS Clock and Data Recovery System for Wireless ASK Transmission

Sandro Carrara, Diego Ghezzi, Gian Luca Barbruni

Over the years, several clock and data recovery architectures have been proposed for wireless Amplitude Shift Keying (ASK) transmitted signals. State-of-the-art architectures mainly rely on synchronous phase-locked loop circuits or selfsampling systems, bo ...

IEEE2023

Changes Over Time in the Electrode/Brain Interface Impedance: An Ex-Vivo Study

Sandro Carrara, Diego Ghezzi, Gian Luca Barbruni

Closed-loop neural implants based on continuous brain activity recording and intracortical microstimulation are extremely effective and promising devices to monitor and address many neurodegenerative diseases. The efficiency of these devices depends on the ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2023

Engineering Materials for Neurotechnology

Diego Ghezzi

Neurotechnology applies methods and devices to mitigate the burden of neurological and mental disorders. In particular, neural interfaces establish a long-term, seamless, symbiotic integration between implants and neural tissue. Materials play a pivotal ro ...

WILEY-V C H VERLAG GMBH2023