An optogenetic headstage for optical stimulation and neural recording in life science applications

Authors: Ameli, Reza
Advisor: Gosselin, BenoitFortier, Paul
Abstract: Optogenetics is a new method for controlling the neural activity where light is used to activate or silence, with high spatial and temporal resolution, genetically light-sensitized neurons. In optogenetics, a light source such as a LED, targets light-sensitized neurons. In this work, a light-weight wireless animal optogenetic headstage has been designed that allows multi-channel simultaneous real-time optical stimulation and neural recording. This system has two optogenetic stimulation channels and two electrophysiological reading channels. The optogenetic stimulation channels benefit from high-power LEDs (sinking 150 milliamps) with flexible stimulation patterns and the recorded neural data is wirelessly sent to a computer. The dimensions of the headstage are almost 20×20×15 mm3 and it weighs less than 7 grams. This headstage is suitable for tests on small freely-moving rodents. To the best of our knowledge, this is the first reported fully wireless headstage to offer simultaneous multichannel optical stimulation along with multichannel neural recording capability.
Document Type: Mémoire de maîtrise
Issue Date: 2015
Open Access Date: 23 April 2018
Grantor: Université Laval
Collection:Thèses et mémoires

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