Functional connectivity maps. Examples of functional connectivity maps evaluated for the strongest 8 connections in a culture manipulated with (A) KCl or (B) 5-HT. The connection strength is coded by the color arrow: from red (strong) to white (weak). Inside the maps, two examples of cross-correlograms are reported. Scale bars: A: x-axis: 90 ms, y-axis: 0.2. B: x-axis: 90 ms, y-axis: 0.01.