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Showing 1 to 12 of 12 entries
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Synergistic Coding by Cortical Neural Ensembles.

IEEE transactions on information theory

Aghagolzadeh M, Eldawlatly S, Oweiss K.
PMID: 20376281
IEEE Trans Inf Theory. 2010 Feb 01;56(2):875-899. doi: 10.1109/TIT.2009.2037057.

An essential step towards understanding how the brain orchestrates information processing at the cellular and population levels is to simultaneously observe the spiking activity of cortical neurons that mediate perception, learning, and motor processing. In this paper, we formulate...

Modeling and optimization of printed spiral coils in air, saline, and muscle tissue environments.

IEEE transactions on biomedical circuits and systems

Uei-Ming Jow, Ghovanloo M.
PMID: 20948991
IEEE Trans Biomed Circuits Syst. 2009 Oct;3(5):339-47. doi: 10.1109/TBCAS.2009.2025366. Epub 2009 Aug 25.

Printed spiral coils (PSCs) are viable candidates for near-field wireless power transmission to the next generation of high-performance neuroprosthetic devices with extreme size constraints, which will target intraocular and intracranial spaces. Optimizing the PSC geometries to maximize the power...

Optimization of data coils in a multiband wireless link for neuroprosthetic implantable devices.

IEEE transactions on biomedical circuits and systems

Uei-Ming Jow, Ghovanloo M.
PMID: 21918679
IEEE Trans Biomed Circuits Syst. 2010 Oct;4(5):301-10. doi: 10.1109/TBCAS.2010.2049491. Epub 2010 Jun 14.

We have presented the design methodology along with detailed simulation and measurement results for optimizing a multiband transcutaneous wireless link for high-performance implantable neuroprosthetic devices. We have utilized three individual carrier signals and coil/antenna pairs for power transmission, forward...

An Adaptive Reconfigurable Active Voltage Doubler/Rectifier for Extended-Range Inductive Power Transmission.

IEEE transactions on circuits and systems. II, Express briefs : a publication of the IEEE Circuits and Systems Society

Lee HM, Ghovanloo M.
PMID: 24633369
IEEE Trans Circuits Syst II Express Briefs. 2012;286-288. doi: 10.1109/ISSCC.2012.6177017.

We present an adaptive reconfigurable active voltage doubler (VD)/rectifier (REC) (VD/REC) in standard CMOS, which can adaptively change its topology to either a VD or a REC by sensing the output voltage, leading to more robust inductive power transmission...

Tracking single units in chronic, large scale, neural recordings for brain machine interface applications.

Frontiers in neuroengineering

Eleryan A, Vaidya M, Southerland J, Badreldin IS, Balasubramanian K, Fagg AH, Hatsopoulos N, Oweiss K.
PMID: 25071546
Front Neuroeng. 2014 Jul 08;7:23. doi: 10.3389/fneng.2014.00023. eCollection 2014.

In the study of population coding in neurobiological systems, tracking unit identity may be critical to assess possible changes in the coding properties of neuronal constituents over prolonged periods of time. Ensuring unit stability is even more critical for...

An Integrated Power-Efficient Active Rectifier With Offset-Controlled High Speed Comparators for Inductively Powered Applications.

IEEE transactions on circuits and systems. I, Regular papers : a publication of the IEEE Circuits and Systems Society

Lee HM, Ghovanloo M.
PMID: 22174666
IEEE Trans Circuits Syst I Regul Pap. 2011;58(8):1749-1760. doi: 10.1109/TCSI.2010.2103172.

We present an active full-wave rectifier with offset-controlled high speed comparators in standard CMOS that provides high power conversion efficiency (PCE) in high frequency (HF) range for inductively powered devices. This rectifier provides much lower dropout voltage and far...

A Fully Implantable, Programmable and Multimodal Neuroprocessor for Wireless, Cortically Controlled Brain-Machine Interface Applications.

Journal of signal processing systems

Zhang F, Aghagolzadeh M, Oweiss K.
PMID: 23050029
J Signal Process Syst. 2012 Dec 01;69(3):351-361. doi: 10.1007/s11265-012-0670-x. Epub 2011 Jun 15.

Reliability, scalability and clinical viability are of utmost importance in the design of wireless Brain Machine Interface systems (BMIs). This paper reports on the design and implementation of a neuroprocessor for conditioning raw extracellular neural signals recorded through microelectrode...

A Figure-of-Merit for Designing High-Performance Inductive Power Transmission Links.

IEEE transactions on industrial electronics (1982)

Kiani M, Ghovanloo M.
PMID: 25382898
IEEE Trans Ind Electron. 2012 Nov 16;60(11):5292-5305. doi: 10.1109/TIE.2012.2227914.

Power transfer efficiency (PTE) and power delivered to the load (PDL) are two key inductive link design parameters that relate to the power source and driver specs, power loss, transmission range, robustness against misalignment, variations in loading, and interference...

An Inductively Powered Scalable 32-Channel Wireless Neural Recording System-on-a-Chip for Neuroscience Applications.

Digest of technical papers. IEEE International Solid-State Circuits Conference

Lee SB, Lee HM, Kiani M, Jow UM, Ghovanloo M.
PMID: 21572569
Dig Tech Pap IEEE Int Solid State Circuits Conf. 2010;2010:120-121. doi: 10.1109/ISSCC.2010.5434028.

No abstract available.

An RFID-Based Closed-Loop Wireless Power Transmission System for Biomedical Applications.

IEEE transactions on circuits and systems. II, Express briefs : a publication of the IEEE Circuits and Systems Society

Kiani M, Ghovanloo M.
PMID: 21179391
IEEE Trans Circuits Syst II Express Briefs. 2010 Apr 01;57(4):260-264. doi: 10.1109/TCSII.2010.2043470.

This brief presents a standalone closed-loop wireless power transmission system that is built around a commercial off-the-shelf (COTS) radio-frequency identification (RFID) reader (TRF7960) operating at 13.56 MHz. It can be used for inductively powering implantable biomedical devices in a...

Design and Optimization of a 3-Coil Inductive Link for Efficient Wireless Power Transmission.

IEEE transactions on biomedical circuits and systems

Kiani M, Jow UM, Ghovanloo M.
PMID: 21922034
IEEE Trans Biomed Circuits Syst. 2011 Jul 14;99:1. doi: 10.1109/TBCAS.2011.2158431.

Inductive power transmission is widely used to energize implantable microelectronic devices (IMDs), recharge batteries, and energy harvesters. Power transfer efficiency (PTE) and power delivered to the load (PDL) are two key parameters in wireless links, which affect the energy...

Temporal precision in population-but not individual neuron-dynamics reveals rapid experience-dependent plasticity in the rat barrel cortex.

Frontiers in computational neuroscience

Eldawlatly S, Oweiss KG.
PMID: 25505407
Front Comput Neurosci. 2014 Nov 25;8:155. doi: 10.3389/fncom.2014.00155. eCollection 2014.

Cortical reorganization following sensory deprivation is characterized by alterations in the connectivity between neurons encoding spared and deprived cortical inputs. The extent to which this alteration depends on Spike Timing Dependent Plasticity (STDP), however, is largely unknown. We quantified...

Showing 1 to 12 of 12 entries