, inhibition describes any reduction in positive response to a stimulus. This is not necessarily analogous to the use of the term to describe synaptic responses in biological and artificial neural networks.
In biological neurons
, inhibition describes a property of a synapse
or synaptic response that causes the neuron to be less likely to fire when it is stimulated.
In artificial neural networks
, an inhibitory synapse
is a synapse
, which is historically represented with a negative weight value
. The inhibitory synapse modulates the stimulation by the negative weight, causing the neuron
's output to become less positive.