Neuromorphic processor and neuromorphic processing method

A neuromorphic processor comprising:

• a plurality of neuromorphic elements, each neuromorphic element of the plurality of neuromorphic elements having a respective state memory entry for storing a state of the neuromorphic element;
• a message exchange facility to enable the plurality of neuromorphic elements to transmit neural event messages and to receive transmitted neural event messages, wherein a neural event message includes:
• an indication of one or more of the plurality of neuromorphic elements selected as a destination, and
• a message type;
• and
• a computation unit to update the state of a respective one of the plurality of neuromorphic elements based on a received neural event message received by the respective one of the plurality of neuromorphic elements;
• wherein the message type of the received neural event message indicates that the received neural event message is an accumulation message or a leakage message,
• wherein the accumulation message instructs the computation unit to modify a state value of the respective one of the plurality of neuromorphic elements by addition or subtraction of a value indicated as a parameter in the accumulation message, and
• wherein the leakage message instructs the computation unit to modify the state value by reduction of the state value with a leakage value that is correlated with the state value.