Twenty-six neurons (13%; 11% in monkey 1, 15% in monkey 2) showed a main effect of viewing condition. Only 1 neuron (< 1% ... ms before the target), and this activation continued into the analysis ...

Since their discovery in the monkey brain, it has been suggested that ... to only one of the songs in the bird's repertoire — the neuron's primary song. Moreover, these neurons fired at a ...