Cross-correlation and joint spectro-temporal receptive field properties in auditory cortex

Journal of Neurophysiology
Masahiko Tomita, J J Eggermont

Abstract

Recordings were made from the right primary auditory cortex in 17 adult cats using two eight-electrode arrays. We recorded the neural activity under spontaneous firing conditions and during random, multi-frequency stimulation, at 65 dB SPL, from the same units. Multiple single-unit (MSU) recordings (281) were stationary through 900 s of silence and during 900 s of stimulation. The cross-correlograms of 545 MSU pairs with peak lag times within 10 ms from zero lag time were analyzed. Stimulation reduced the correlation in background activity, and as a result, the signal-to-noise ratio of correlated activity in response to the stimulus was enhanced. Reconstructed spectro-temporal receptive fields (STRFs) for coincident spikes showed larger STRF overlaps, suggesting that coincident neural activity serves to sharpen the resolution in the spectro-temporal domain. The cross-correlation for spikes contributing to the STRF depended much stronger on the STRF overlap than the cross-correlation during either silence or for spikes that did not contribute to the STRF (OUT-STRF). Compared with that for firings during silence, the cross-correlation for the OUT-STRF spikes was much reduced despite the unchanged firing rate. This suggests that s...Continue Reading

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Citations

Apr 29, 2008·Neural Computation·Shawn Mikula, Ernst Niebur
Mar 9, 2010·PloS One·Craig A Atencio, Christoph E Schreiner
Mar 6, 2010·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Jeremiah Y CohenJeffrey D Schall
Jun 23, 2012·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Chen ChenMonty A Escabí
Jun 17, 2006·Annual Review of Neuroscience·Michael C-K WuJack L Gallant
Mar 6, 2015·Frontiers in Neurology·Jos J Eggermont, Peter A Tass
Apr 10, 2007·Journal of Neuroscience Methods·Boris Gourévitch, Jos J Eggermont
May 10, 2008·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Paul H DelanoPedro E Maldonado
Jul 5, 2008·The European Journal of Neuroscience·Boris Gourévitch, Jos J Eggermont
Apr 3, 2008·Neuroreport·Yoshimasa Seki, Kazuo Okanoya
Jun 20, 2006·Nature Neuroscience·Arnaud J NoreñaJos J Eggermont
Jan 5, 2007·Journal of Neurophysiology·Boris Gourévitch, Jos J Eggermont
Jun 13, 2014·Journal of Neurophysiology·Monty A EscabíYale E Cohen
Feb 9, 2021·Frontiers in Neuroscience·Prasandhya Astagiri YusufAndrej Kral
Oct 31, 2006·Journal of Neuroscience Methods·Boris Gourévitch, Jos J Eggermont

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