Take all arguments that these models resemble our brain with a huge grain of salt. At best they're a metaphor. There's one critical difference between biologic

Take all arguments that these models resemble our brain with a huge grain of salt. At best they're a metaphor. There's one critical difference between biological neural networks and the artificial models they're talking about here: the biological neurons produce spikes when they activate, not continuously-variable activation levels. These artificial models whitewash these features away by modelling only the neuron's firing rate and not the inter-spike timing or spike train behaviours.