Perception as interacting psychophysical functions. Could the configuring of features replace a specialised receptor?

Area of Science:

• Psychology
• Sensory Perception
• Psychophysics

Background:

• Perception is understood as the integration of object features.
• Internal standards (norms) based on experience influence feature processing.
• Existing models for feature integration can be complex.

Purpose of the Study:

• To illustrate how perception is achieved through interactions of psychophysical functions.
• To propose a model where features are processed in a multidimensional space.
• To demonstrate a simpler method for understanding complex perception.

Main Methods:

• Objects with single features were used to match multi-featured objects.
• Discrimination distances from a norm were measured.
• Two models of feature integration were tested: additive distances and conceptual processing.

Main Results:

• Perception of multi-featured objects can be achieved by combining perceptions of single features.
• Stimulation from multiple features either added their discrimination distances or was processed conceptually.
• L-glutamic acid (monosodium salt) served as a multi-featured object, with NaCl, citric acid, sucrose, and caffeine as single features.

Conclusions:

• Perception of complex stimuli can be simplified by balancing individual feature receptors.
• The proposed approach is modality-independent, mathematically simple, and data-economical.
• This offers a new perspective on sensory coding and perception.