The Biological Neuron The synapse Soma Axon Terminal button Dendrite Nucleus Synaptic Neuro- gap transmitters Terminal buttons Dendrite Schematic of biological neuron. 10 billion neurons in human brain 10 billion synapses in human brain Summation of input stimuli Chemical transmission and -Spatial(signals) modulation of signals Temporal(pulses) ·Inhibitory synapses Threshold over composed inputs ·Excitatory synapses Constant firing strength 09/07/2023 Artificial Neural Networks-I 409/07/2023 Artificial Neural Networks - I 4 The Biological Neuron • 10 billion neurons in human brain • Summation of input stimuli – Spatial (signals) – Temporal (pulses) • Threshold over composed inputs • Constant firing strength • billion synapses in human brain • Chemical transmission and modulation of signals • Inhibitory synapses • Excitatory synapses 6 10