Figure 4.

Relations between the action potential frequency and the number of active synapses in individual compartments as well as between the energy consumption of integrating each bit of information and the number of active synapses in individual compartments. Only eight compartments corresponding to the basal dendrites, distal trunk, prolonged trunk, trunk branches, and distal tuft are illustrated here. The values on the horizontal axes indicate the number of active synapses in each compartment. (A) The change in the frequency and the energy consumption when the synapses on distal basal dendrites become active. (B) The change when the synapses on proximal basal dendrites become active. (C) The change when the synapses on distal trunk become active. (D) The change when the synapses on prolonged trunk become active. (E) The change when the synapses on proximal trunk branch become active. (F) The change when the synapses on medial trunk branch become active. (G) The change when the synapses on distal trunk branch become active. (H) The change when the synapses on distal tuft become active.