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Full-Text Articles in Biomedical Engineering and Bioengineering

The Efficacy And Optimization Of Somatosensory Intracortical Microstimulation In Rats, Sean P. Mcdowell, Ryan S. Verner, Kevin J. Otto Dr. Oct 2013

The Efficacy And Optimization Of Somatosensory Intracortical Microstimulation In Rats, Sean P. Mcdowell, Ryan S. Verner, Kevin J. Otto Dr.

The Summer Undergraduate Research Fellowship (SURF) Symposium

Demand exists for brain-machine interfaces that offer a wide range of sensory feedback along with volitional motor control to individuals with limited control of natural sensory or motor function. As these sensorimotor devices are developed, it is necessary to improve the interaction between the prostheses and higher-level cortical structures. Optimizing these somatosensory stimulation parameters will require the use of a high-throughput experimental design. To address this, one Sprague-Dawley rat was trained to respond to auditory stimuli during a conditioned-avoidance behavior task and then implanted with a penetrating microelectrode array in the part of the somatosensory cortex corresponding to the left …


Toward An Optogenetic Autonomous Nerve Control (Oanc) System, Malika S. Datta, Matthew Ward, Steven Lee, Kevin Seburn, Pedro Irazoqui Oct 2013

Toward An Optogenetic Autonomous Nerve Control (Oanc) System, Malika S. Datta, Matthew Ward, Steven Lee, Kevin Seburn, Pedro Irazoqui

The Summer Undergraduate Research Fellowship (SURF) Symposium

Optogenetics is a developing field in neuroscience, where nerves are stimulated through optical instead of electrical signals, allowing for a more selective action of nerve populations [Aravanis et al, 2007]. In the context of electrical stimulation, the autonomous nerve control (ANC) system has been used successfully, first to map the response of different nerve fibers to create a Nerve Activation Profile, and then to use this profile in recruiting specific nerve fibers in a controlled way [MP Ward et al, unpublished manuscript in preparation]. The objective of the present project is to apply the ANC system to optical stimulation thus …