Fig. 2: Measurements of the neuron circuitry on the TEXEL chip.
From: A neuromorphic processor with on-chip learning for beyond-CMOS device integration
a The measured firing rates of all neurons on TEXEL in response to a constant DC input current. b Measurement of the membrane potential of a single neuron in response to a DC step input. The neuron’s adaptation characteristic is evident as its firing rate begins high and gradually diminishes to attain a steady state. c Measurements of the variations in the instantaneous firing rate and timing of output spikes in relation to the magnitude of DC injected into the soma. d The recorded membrane potential response of a neuron receiving presynaptic Poisson input at the static excitatory synapses. Below, in blue, is the presynaptic spike train, while above, in green, the postsynaptic spikes indicate the neuron’s spiking activity.
