Research Article
Anticorrelations between Active Brain Regions: An Agent-Based Model Simulation Study
Figure 3
State balance of an agent (A) surrounded by six neighbors. (a) Activity levels of an agent in the SER (susceptible-excited-refractory) states: top and bottom pictures refer to a cycling scheme and to the classical action potential scheme, respectively. In parentheses are the 0/1 activity level of the state. sop and nep indicate the probability of getting the S → E and R → S state change, respectively (see the text for further details). (b) The state of the central node (A) in the next time step depends upon local (endogenous) and global (exogenous) factors. Three out of the four positively linked neighbors are active (1), so the average activity (3/4) exceeds the φp = 0.5 threshold. This is also the case for the both active (1) and negatively linked neighbors, since φn = 0.5 also.
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