Fig 6. Proportion of units (range: 0–0.2) active above threshold (0.7) in the recurrent layer of the RNNs.

Note: total number of units in the recurrent layer n = 50 for all conditions except for Phrases, in which n = 30. On average, between 5–9 units out of 50 in the hidden layer activated at 4 Hz. There was no evidence of activity at 1 Hz or 2 Hz, and hence no evidence for coding or tracking of linguistic structures in the RNN. Data from the simulations and the code to run the simulations are available at https://osf.io/eb2vp/ and https://github.com/AlexDoumas/dingetal_sent.