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. 2015 May 13;114(1):624–637. doi: 10.1152/jn.00304.2015

Table 3.

Multiple linear regression of the JBSI on uIPSP, ECC, and driver firing rate

Value SE P Value
SOM pairs
    R2 0.54 0.18 <10−6
    Intercept −0.10 0.11 0.36
    ECC β 0.65 0.10 <10−6
    Driver rate β 0.30 0.10 0.005
FS pairs
    R2 0.60 0.15 <10−6
    Intercept −0.07 0.06 0.24
    uIPSP β 0.53 0.08 <10−6
    ECC β 0.31 0.08 0.0001
    Driver rate β 0.27 0.08 0.002
FS pairs
    R2 0.64 0.14 <10−6
    Intercept −0.10 0.05 0.07
    uIPSP β 0.45 0.07 <10−6
    Coupled Y/N? β 0.38 0.07 1×10−6
    Driver rate β 0.30 0.08 0.0002

Multiple linear regression of the Jitter-Based Synchrony Index (JBSI) shows relative contributions of electrical coupling (ECC, electrical coupling coefficient), inhibitory synaptic connections (unitary IPSP, uIPSP), and driver firing rate to pairwise synchrony in SOM (N = 49 pairs) and FS (N = 80 pairs) interneurons. Replacing the ECC in FS cells with a categorical variable (coupled/not coupled; 2nd set of data for FS pairs) increased the R2 value and approximately equalized the contributions of electrical and chemical coupling (see text).