A deconvolution based method with high sensitivity and temporal resolution for detection of spontaneous synaptic currents in vitro and in vivo

A. Pernia-Andrade, S. Goswami, Y. Stickler, U. Fröbe, A. Schlögl, P.M. Jonas, Biophysical Journal 103 (2012) 1429–1439.


Journal Article | Published | English
Abstract
Spontaneous postsynaptic currents (PSCs) provide key information about the mechanisms of synaptic transmission and the activity modes of neuronal networks. However, detecting spontaneous PSCs in vitro and in vivo has been challenging, because of the small amplitude, the variable kinetics, and the undefined time of generation of these events. Here, we describe a, to our knowledge, new method for detecting spontaneous synaptic events by deconvolution, using a template that approximates the average time course of spontaneous PSCs. A recorded PSC trace is deconvolved from the template, resulting in a series of delta-like functions. The maxima of these delta-like events are reliably detected, revealing the precise onset times of the spontaneous PSCs. Among all detection methods, the deconvolution-based method has a unique temporal resolution, allowing the detection of individual events in high-frequency bursts. Furthermore, the deconvolution-based method has a high amplitude resolution, because deconvolution can substantially increase the signal/noise ratio. When tested against previously published methods using experimental data, the deconvolution-based method was superior for spontaneous PSCs recorded in vivo. Using the high-resolution deconvolution-based detection algorithm, we show that the frequency of spontaneous excitatory postsynaptic currents in dentate gyrus granule cells is 4.5 times higher in vivo than in vitro.
Publishing Year
Date Published
2012-10-03
Journal Title
Biophysical Journal
Acknowledgement
This work was supported by the Deutsche Forschungsgemeinschaft (TR3/B10) and a European Research Council Advanced grant to P.J. We thank H. Hu, S. J. Guzman, and C. Schmidt-Hieber for critically reading the manuscript, I. Koeva and F. Marr for technical support, and E. Kramberger for editorial assistance.
Volume
103
Issue
7
Page
1429 - 1439
IST-REx-ID

Cite this

Pernia-Andrade A, Goswami S, Stickler Y, Fröbe U, Schlögl A, Jonas PM. A deconvolution based method with high sensitivity and temporal resolution for detection of spontaneous synaptic currents in vitro and in vivo. Biophysical Journal. 2012;103(7):1429-1439. doi:10.1016/j.bpj.2012.08.039
Pernia-Andrade, A., Goswami, S., Stickler, Y., Fröbe, U., Schlögl, A., & Jonas, P. M. (2012). A deconvolution based method with high sensitivity and temporal resolution for detection of spontaneous synaptic currents in vitro and in vivo. Biophysical Journal, 103(7), 1429–1439. https://doi.org/10.1016/j.bpj.2012.08.039
Pernia-Andrade, Alejandro, Sarit Goswami, Yvonne Stickler, Ulrich Fröbe, Alois Schlögl, and Peter M Jonas. “A Deconvolution Based Method with High Sensitivity and Temporal Resolution for Detection of Spontaneous Synaptic Currents in Vitro and in Vivo.” Biophysical Journal 103, no. 7 (2012): 1429–39. https://doi.org/10.1016/j.bpj.2012.08.039.
A. Pernia-Andrade, S. Goswami, Y. Stickler, U. Fröbe, A. Schlögl, and P. M. Jonas, “A deconvolution based method with high sensitivity and temporal resolution for detection of spontaneous synaptic currents in vitro and in vivo,” Biophysical Journal, vol. 103, no. 7, pp. 1429–1439, 2012.
Pernia-Andrade A, Goswami S, Stickler Y, Fröbe U, Schlögl A, Jonas PM. 2012. A deconvolution based method with high sensitivity and temporal resolution for detection of spontaneous synaptic currents in vitro and in vivo. Biophysical Journal. 103(7), 1429–1439.
Pernia-Andrade, Alejandro, et al. “A Deconvolution Based Method with High Sensitivity and Temporal Resolution for Detection of Spontaneous Synaptic Currents in Vitro and in Vivo.” Biophysical Journal, vol. 103, no. 7, Biophysical, 2012, pp. 1429–39, doi:10.1016/j.bpj.2012.08.039.

Link(s) to Main File(s)
Access Level
OA Open Access

Export

Marked Publications

Open Data IST Research Explorer

Sources

PMID: 23062335
PubMed | Europe PMC

Search this title in

Google Scholar