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How does surround inhibition make sensory details easier to distinguish?

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Compound eye — Senses Vespid wasps (Vespidae), similar to other insects, have compound eyes that consist of thousands of tiny optical units known as ommatidia, which contain light-sensitive photoreceptor cells.

Surround inhibition is a fundamental mechanism in the nervous system that enhances sensory perception by sharpening the distinction between a stimulus and its background.

In systems such as the retina and the somatosensory system, a receptive field is organized with a central area that responds to a stimulus and a surrounding area that exerts an inhibitory effect. When a stimulus is applied, the central region is excited while the surrounding region is inhibited. This process, often referred to as lateral inhibition or centre-surround antagonism, creates a contrast between the center and the periphery.12

By suppressing the activity of neurons in the surrounding area, the nervous system effectively "filters out" background noise and accentuates the boundaries of the stimulus. This mechanism makes sensory details easier to distinguish because it increases the contrast of the signal, allowing for finer localization and more precise identification of sensory inputs.12