A PDA-based Research Platform for Cochlear Implants

Lobo, Arthur P.; Loizou, Philipos C.; Kehtarnavaz, Nasser; Torlak, Murat; Lee, Hoi; Sharma, Anu; Gilley, Phillip M.; Peddigari, Venkat; Ramanna, Lakshmish

doi:10.1109/cne.2007.369603

Cited by 16 publications

(25 citation statements)

References 4 publications

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“…Offline mode requires a PC running MATLAB in addition to the above hardware. For hardware details, please refer to [12] and [13]. Fig.…”

Section: On the Design And Evaluation Of The Pda-based Research Platfmentioning

confidence: 99%

“…The electric processing routine requires a patient's clinical electrical map while the audio processing routine utilizes patient's audiogram for subjective processing. Electric processing produces a set of amplitudes representing the energy levels in each of 22 frequency bands, a subset (8)(9)(10)(11)(12) of which are used for stimulation. These amplitude levels are then sent to the SDIO board which transmits them to the implant using RF protocols specific to the implant.…”

Section: On the Design And Evaluation Of The Pda-based Research Platfmentioning

confidence: 99%

“…This improvement is more evident in the noisy conditions as suggested in [10], [11] and is primarily attributed to access to more reliable F0 cues in the acoustic portion. In our previous work [12] [13], we proposed a PDA-based research platform for researchers working in this domain to explore new ideas to improve cochlear implant devices. In the present work, we have extended the functionality of the platform to include acoustic stimulation in addition to electrical stimulation for researchers interested in experimenting with bimodal CI users.…”

Section: Introductionmentioning

confidence: 99%

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On the design and evaluation of the PDA-based research platform for electric and acoustic stimulation

Ali

Lobo

Loizou

2012

2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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The aim of the paper is to describe the bimodal (combining electrical stimulation via the implant with acoustic stimulation via hearing aids) design of the PDA-based research platform and present results from a short-term evaluation with five bimodal cochlear implant users. The evolution of the PDA platform has been reported earlier in terms of development and its potential in various experiments. This paper focuses on the evaluation of the platform with bimodal users in terms of speech intelligibility in quiet, 10dB and 5dB SNR conditions and compares the results with the users' own clinical processor. The results of this clinical trial will encourage researchers in this area to use the platform in their future studies as it provides unparalleled flexibility along with a large suite of applications to conduct a wide variety of experiments for electric-only and combined electric and acoustic stimulation (EAS) for long-term chronic studies with great ease.

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“…Offline mode requires a PC running MATLAB in addition to the above hardware. For hardware details, please refer to [12] and [13]. Fig.…”

Section: On the Design And Evaluation Of The Pda-based Research Platfmentioning

confidence: 99%

Section: On the Design And Evaluation Of The Pda-based Research Platfmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

On the design and evaluation of the PDA-based research platform for electric and acoustic stimulation

Ali

Lobo

Loizou

2012

2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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“…While most implant manufacturers provide research speech processors which allow researchers to develop and test new signal processing algorithms, most research labs are unable to use them either due to limited technical resources or due to constrained framework of the interface provided by the manufacturer [2]. Limitations of these research platforms include flexibility, portability, wearability and long-term evaluation.…”

Section: Introductionmentioning

confidence: 97%

A PDA platform for offline processing and streaming of stimuli for cochlear implant research

Ali

Lobo

Loizou

2011

2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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A PDA-based research platform has been developed for implementing novel speech processing strategies and conducting psychophysical experiments with cochlear implant (CI) research that do not necessarily require real-time processing. The developed interface streams stimuli pulses to a CI unit in an offline mode from a Personal Computer via PDA platform using Windows Sockets (WINSOCK). Front-end of the application is run in MATLAB where stimuli pulses are created. Winsock establishes a TCP/IP connection with the PDA and starts the transmission of stimuli data. Server application installed on the PDA reads the stimulation data and forwards it to the SDIO board in packets where it is forwarded to the cochlear implant unit and pulses are then played in realtime. Versatility and flexibility are the key characteristics of the platform for easy implementation and testing of a wide range of applications and experiments without advanced programming skills.

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“…Referred to as the SDIO-BiSTM, the portable stimulation platform is based upon the openinterface cochlear implant research platform reported in [11]. Similar to the open-interface research platform, the SDIO-BiSTM exploits the mobile processing capabilities of a personal digital assistant (PDA) and combines it with a custom made interface card that communicates with the PDA through a secure digital IO (SDIO) slot, hence the SDIO prefix in the name of the portable stimulation platform.…”

Section: Portable Stimulator: Sdio-bistm System Overviewmentioning

confidence: 99%

On the design of a flexible stimulator for animal studies in auditory prostheses

Kim

Gopalakrishna

Guo

et al. 2009

2009 2nd International Symposium on Applied Sciences in Biomedical and Communication Technologies

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The present paper describes the design of two stimulators (bench-top and portable) which can be used for animal studies in cochlear implants. The bench-top stimulator is controlled by a highspeed digital output board manufactured by National Instruments and is electrically isolated. The portable stimulator is controlled by a personal digital assistant (PDA) and is based on a custom interface board that communicates with the signal processor in the PDA through the secure digital IO (SDIO) slot. Both stimulators can provide 8 charge-balanced, bipolar channels of pulsatile and analog-like electrical stimulation, delivered simultaneously, interleaved or using a combination of both modes. Flexibility is provided into the construction of arbitrary, but charge-balanced, pulse shapes, which can be either symmetric or asymmetric.

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A PDA-based Research Platform for Cochlear Implants

Cited by 16 publications

References 4 publications

On the design and evaluation of the PDA-based research platform for electric and acoustic stimulation

On the design and evaluation of the PDA-based research platform for electric and acoustic stimulation

A PDA platform for offline processing and streaming of stimuli for cochlear implant research

On the design of a flexible stimulator for animal studies in auditory prostheses

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