Before revision:  The phenomena of intrinsic stochastic resonance is found both in single neuron level and network level. In single neuron level, the detection ability of the neuron was optimized versus the ion channel patch size(i. e., channel noise intensity). Whereas in network level, the detection ability of the network was optimized versus the number of neurons involved in .
After revision:  The phenomena of intrinsic stochastic resonance is also found both at the level of single neurons and at the level of networks. At the network level, the detection ability of the network was optimized versus the number of neurons involved in .