Howtosignalprocessing
- What is spike frequency adaptation?
- How is Spike frequency calculated?
- What is receptor adaptation?
- What does it mean for a neuron to spike?
What is spike frequency adaptation?
Spike-frequency adaptation is the reduction of a neuron's firing rate to a stimulus of constant intensity. In the locust, the Lobula Giant Movement Detector (LGMD) is a visual interneuron that exhibits rapid adaptation to both current injection and visual stimuli.
How is Spike frequency calculated?
The mean spike frequency or the average firing frequency is the number of inter-spike intervals (ISI's) divided by time difference between the first and the last spike: . The time difference between the first and the last spike, tn+1 – t1, can be calculated as the sum of the n inter-spike intervals .
What is receptor adaptation?
Definition. Adaptation is the decline of the electric responses of a receptor neuron over time in spite of the continued presence of an appropriated stimulus of constant strength. This change is apparent as a gradual decrease in the frequency of spikes generated within the receptor neuron.
What does it mean for a neuron to spike?
These signals are electrochemical in nature, and travel from the cell body of a neuron through its transport stalk or the axon, to the next neuron – similar to passing the baton in a relay race. Every such firing signal is referred to as a spike, or an action potential.
