Existence and Control of Go/No-Go Decision Transition Threshold in the Striatum
Fig 10
Generation of within and between correlations.
(A) The correlations are generated by copying spikes twice from the mother process (M). Let Rin be the rate of the mother process. The spikes are copied into a set of children processes (C1 ⋯ CN) with a copy probability B′. This controls the shared input to the postsynaptic population and leads to a rate Rin B′. The spikes are copied for a second time with a copy probability W into a pool of input neurons (C11 ⋯ C1N). Each neuron in the input pool spikes with a rate Rin B′W. The correlation within the input pool can be increased by increasing W, whereas the shared input can be increased by increasing the copy probability B′. (B) B ≤ W. The means of the pairwise correlations measured from randomly chosen 2000 pairs of MSN neurons (B) are plotted against the corresponding W values. The different colors represent different input rates in Hz. Notice that most of the points lie below the diagonal.