Which stimulus features can a neuron’s receptive field be selective for?

A neuron’s receptive field can be selective for a wide range of stimulus features, which become increasingly complex as information moves from peripheral sensory receptors to higher cognitive areas of the brain.1

In the visual and somatosensory systems, neurons exhibit selectivity for features such as:
* Spatial characteristics: Including size, orientation, and the direction of motion.1
* Visual properties: Such as colour, spatial frequency, and specific edge or line configurations.12
* Auditory properties: Neurons may be selective for loudness, pure tones, or frequency-modulated sounds.1

As processing progresses to higher cortical areas, selectivity becomes more specialized. For example, while primary sensory neurons might respond to simple lines or edges, neurons in higher visual areas can become selective for complex images, such as faces or specific objects.12

The specific stimulus features a neuron responds to are defined by its synaptic inputs and can be influenced by the neuron's adaptation state. Through techniques like spike-triggered averaging, researchers can determine the specific stimulus parameters that elicit a response from a given cell.1