Title :
A 220 × 128 120 mW 60 frames/s current mode polarization imager for in vivo optical neural recording
Author :
York, Timothy ; Gruev, Viktor ; Saha, D. ; Raman, Baranidharan
Author_Institution :
Dept. of Comput. Sci. & Eng., Washington Univ. in St. Louis, St. Louis, MO, USA
Abstract :
A 220 by 128 current mode imaging sensor with polarization sensitivity is used to image intrinsic neural activity in vivo from the antenna lobe of a locust. The polarization sensitivity is achieved via post-CMOS fabrication deposition of pixelated aluminum nanowire polarization filters at four different orientations offset by 45 degrees. The measured change in polarization response from the neural cells baseline for hexanol is 0.38%, for octanol is 0.15%, and for the combined odor is 0.45%.
Keywords :
CMOS integrated circuits; aluminium; bioelectric potentials; biomedical optical imaging; cellular biophysics; image sensors; light polarisation; nanomedicine; neurophysiology; Al; current mode imaging sensor; current mode polarization imager; hexanol; in vivo optical neural recording; locust antenna lobe; neural cell baseline; octanol; pixelated aluminum nanowire polarization filters; post-CMOS fabrication deposition; power 120 mW; In vivo; Optical device fabrication; Optical imaging; Optical polarization; Optical scattering; Optical sensors;
Conference_Titel :
Circuits and Systems (ISCAS), 2014 IEEE International Symposium on
Conference_Location :
Melbourne VIC
Print_ISBN :
978-1-4799-3431-7
DOI :
10.1109/ISCAS.2014.6865518
