School of Electrical and Computer Engineering

© 2015 Maysam Ghovanloo

Text Box: “Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius -- and a lot of courage -- to move in the opposite direction.” Albert Einstein
Professional Objective: Using the latest technologies to improve the quality of life for people with the most severe disabilities 
Here you can find a list of current and previous projects:
Text Box: Research Projects
Text Box: WINeR-6

EnerCage System

The EnerCage system is an inductively-powered wireless data acquisition system in the form of a smart cage for electrophysiology experiments on small freely behaving animal subjects. The EnerCage system has three key capabilities: 1) wirelessly powering any electronic device that is attached to or implanted in the animal body 2) wirelessly communicating with any electronic device that is attached to or implanted in the animal body 3) tracking the animal subject and analyzing its behavior.

In conjunction with the WINeRS system, EnerCage permits multichannel neural recording and stimulation for many hours in experimental arenas with any arbitrary dimensions, such as a maze, in an enriched environment similar to rodents' natural habitat.

The EnerCage system offers key advantages including 1) a substantial reduction in the weight and size of the headstage or implant, 2) an unlimited operating time of the inductively powered device, 3) an extendable area over which the animal can freely traverse, 4) behavior experiments on multiple socializing animal subjects, and 5) accurate monitoring of the 3-D position and orientation of a magnetic tracer affixed to the animal's headstage or implant, which does not require the animal to be in the line of sight. More….

Sponsor: National Institutes of Health, NIBIB

Status: Active

 

Multichannel Wireless Implantable Neural Recording System

A telemetry link from inside to outside of the human body is needed in biomedical implants especially when internal biosignals such as neural or muscular activities, or parameters such as pressure, temperature, flow, or concentration of different ions or proteins need to be continuously monitored. To improve implant safety, it should be able to run self-test routines, and report any malfunctioning blocks to the external part of the system. In addition, a closed-loop power regulation mechanism is needed to improve coupling insensitivity, and compensate for variations in the coils relative distance due to patient movements and coils misalignments. We are implementing a wideband and robust wireless multichannel data acquisition system using the Industrial-Medical-Scientific (ISM) band. We are aiming to develop a neural recording system capable of recording from more than 100 electrodes simultaneously without losing any piece of information.    More….

Sponsor: National Science Foundation

Status: Active

 

Multi-Carrier Wireless Link for Implantable Biomedical Devices

Wireless link operating frequency, also known as the carrier frequency, is one of the most important parameters of a transcutaneous link for an implant, which affects all other system specifications. Traditionally, a single carrier has been used for (1) inductive power transmission, (2) forward data transmission from outside to the implanted device (downlink), and (3) back telemetry from the implanted device outward (uplink). In this project we are using three carrier signals at three different frequencies and amplitude levels: (a) low-frequency high-amplitude (fP ~ 10 MHz) for power transmission, (b) medium-frequency medium-amplitude (fFD ~ 50 MHz) for forward data link, and (c) high-frequency low-amplitude (fBT ~ 400 MHz) for back telemetry. These frequencies are close to optimal for the above three major functions and we can effectively separate many of the competing factors in the design of a wireless link. Therefore, we expect to achieve high performance in all of the aforementioned system requirements.    More….

Sponsor: National Institutes of Health, NINDS

Status: Active

 

Tongue Drive System: A Brain-Tongue-Computer Interface

Most brain-computer interfaces (BCI) are either too slow (EEG) or highly invasive (need brain surgery). So far they have not been able to leave research labs to benefit end users. Traditional assistive technologies such as sip-and-puff or head trackers, on the other hand, have been offering primitive means for people with severe disabilities to gain a limited level of independence in their lives. However, persons with tetraplegia as a result of causes ranging from high level spinal cord injury (C2-C4) to stroke and ALS still find it extremely difficult to carry out everyday tasks. We are developing a wireless and wearable brain-tongue-computer interface, called the Tongue Drive System (TDS), that can help individuals with the most severe disabilities access computers, drive powered wheelchairs, and control environments by their free volitional tongue motion. We expect this modern assistive technology to greatly benefit this group of individuals by enabling them to lead self-supportive and independent lives. More….

Sponsor: Christopher and Dana Reeve Foundation, National Science Foundation, National Institutes of Health-NIBIB

Status: Active

 

Wireless Emergency and Adherence Monitoring System

Patients forget to take their medicine, they may think side effects outweigh benefits, they may not believe the diagnosis, they may not understand the directions correctly, they may not know enough about the side-effects, they may use too much, or they may view the medicine as too costly. For whatever reason, even the best medications cannot cure diseases if the patients do not take them in the right doses at the right time. The topic of “pharmaceutical compliance” has become a key issue due to increasing difficulties in achieving point-of-differentiation and health economic objectives justifying premium pricing and reimbursement. We are working on a novel drug compliance monitoring device suitable for clinical and pharmaceutical trials. It can also be an integrated part of the marketed drug concepts.                                   More….

Sponsor: Institute of People and Technology (IPaT)

Status: Active

 

Low-Power Head-Mounted Deep Brain Stimulator

Deep brain stimulation (DBS) is a treatments that is very effective for Parkinson’s disease, essential tremor, dystonia, epilepsy, depression, and obsessive compulsive disorder. Today’s DBS devices, which have stemmed from the pacemaker technology, are mostly implanted in the chest area with wires running under the skin to the cranial electrodes. These wires are found to be the major cause of failure in DBS systems. Design of a small-size low-power head-mounted DBS system is the ultimate goal of this project.               More….

Sponsor: N/A

Status: Active

 

Archived Projects

Wireless Neural Microstimulating System

Real-time interfaces between the external world and the human nervous system, known as neural prostheses, can restore sensory and motor functions that are lost due to injury or disease. Effective interfacing with the central nervous system for restoration of the sensory modalities such as vision requires application of electrical stimulation through high-density interconnects in well-controlled temporal-spatial patterns similar to the natural cognitive neural activity. Some of the major challenges are the implant size, microassembly, stimulation strategy for controlling a large number of sites, low power consumption, wideband wireless link, and safety. We are trying to address the above issues by pushing the limits in each one of these directions.                    More….