Sentence examples for endogenous connections from inspiring English sources
First, the bilinear models could be either "full connectivity," with all possible endogenous connections, or the connectivity could be sparse.
Compared to the most complex Model 1, which included condition-dependent modulation of all endogenous connections, Model 4 did not comprise modulation of connectivity between PFC or M1 and subcortical regions (putamen, thalamus, cerebellum) as a function of the experimental conditions (Fig. 3).
DCM parameters include exogenous inputs, endogenous connections, bilinear, and nonlinear modulatory connections.
Endogenous connections reflect directed coupling among areas, averaged over experimental conditions.
Posterior parameters after Bayesian model averaging for driving inputs and endogenous connections are depicted in Table 1.
In this study, we focused on the fear-induced modulation of visual-limbic-prefrontal connections (modulatory effect), but also examined heroin effects on endogenous connections and driving inputs.
The only remaining endogenous connection was that connecting left-to-right pOp which did not reach significance.
Second, we tested whether the endogenous connectivity for each connection in our best DCM model was significantly different from zero (i.e., an increase in activity in one region leading to a change in activity of the other region) and whether connections are similarly or differently modulated by words and pictures.
For our secondary hypotheses, we found (a) full (rather than sparse) endogenous connectivity and (b) face modulation on connections from BA18 to the OFA only (and not also to the FFA).
The condition-specific modulation of endogenous connectivity does not necessarily affect all possible connections (Friston et al., 2003; Stephan et al., 2010).
The sparse models were motivated by a previous study of magnetoencephalographic induced responses that showed no endogenous connectivity between FFA and the STS and only feedforward connections (Furl, Coppola, et al. 2014).
