Sensation and Perception¶

Status: emerging
Last updated: 2026-05-31
Sources: Proctor Proctor 2021 Sensation And Perception
Tags: [sensation, perception, human-factors, cognitive-foundations, display-design]

Summary¶

Sensation and perception describe how physical stimulation is transduced into neural signals and then organised into a structured experience of meaningful objects. For human factors and ergonomics, this process sets the boundary conditions of display design: information leaving a machine must pass through the operator's senses and be organised and recognised accurately before any decision or control action can follow (Proctor & Proctor, 2021). An effective display is therefore one built to match the characteristics and limitations of the human sensory and perceptual systems rather than working against them.

Body¶

Context¶

Proctor and Proctor (2021), in their handbook chapter on sensation and perception, examine how physical stimulation is transduced into neural signals and organised into a structured experience of meaningful objects, and treat this process as a precondition for display design. Information that is sensed but misorganised, or organised but misrecognised, fails to communicate regardless of the designer's intent, which positions perceptual psychology as a foundation of human-centred design rather than a peripheral concern. Within this knowledge base the article is the perceptual-foundations entry point for the cognitive-foundations strand: it sits upstream of the measurement methods in Psychophysics And Signal Detection Theory and the grouping and recognition processes in Perceptual Organization, both of which the chapter treats in separate sections, and it supplies the sensory rationale that display-oriented work such as Representation Design and Situation Awareness builds on.

Key Points¶

Human–machine interaction rests on a continuous exchange of information in which the machine displays its status and the operator must sense, organise, and recognise that information before acting. An effective display is built to match the characteristics and limitations of the human sensory and perceptual systems rather than working against them (PDF p. 2, orig. p. 57).

Sensory systems are commonly divided into five modalities — vision, audition, olfaction, gustation, and somasthesis — with the vestibular system providing the sense of balance. Although the peripheral mechanisms differ, the senses interact extensively in producing perceptual experience. Vision dominates: roughly 30 per cent of the cortical surface is devoted mainly to visual processing, and most research has concentrated on visual perception, though the other senses remain central to a full perceptual picture (PDF p. 2, orig. p. 57).

All sensory systems extract four characteristics of stimulation — sensory modality and submodality, intensity, duration, and location. Specialised receptors perform sensory transduction, converting physical stimulus energy into electrochemical activity, and the receptors' properties largely determine sensitivity. Encoded signals travel to the brain along structured, highly interconnected pathways, frequently with two or more pathways operating in parallel to analyse different aspects of the same signal before projecting to primary receiving areas in the cortex (PDF pp. 2–4, orig. pp. 57–59).

Beyond basic sensory coding, perception involves higher-level organisation: the visual system delivers not patches of light but a world of segregated figures, recognised patterns, and perceived motion and depth (PDF p. 23, orig. p. 78). These organisational processes are treated in dedicated articles on Perceptual Organization and on the psychophysical methods used to measure perception in Psychophysics And Signal Detection Theory.

Conclusion¶

Proctor and Proctor (2021) conclude that perception is constructive and can be misled, so displays must be engineered around how organisation and recognition actually operate. Information leaving a machine must pass through the operator's senses and be organised and recognised accurately before any decision or control action can follow.

References¶

Proctor, R. W. and Proctor, J. D. (2021) 'Sensation and perception', in Salvendy, G. and Karwowski, W. (eds.) Handbook of Human Factors and Ergonomics. 5th edn. Hoboken, NJ: John Wiley & Sons, pp. 57–92. doi: 10.1002/9781119636113.ch3. proctor2021sensation

Open Questions¶

The chapter notes that direction of fixation is not always equivalent to direction of attention (Proctor & Proctor, 2021). The eye-movement and visual-attention material here connects directly to eye-tracking research and warrants a cross-referenced treatment in eye-tracking-research-kb.
Multisensory interaction (the extent to which modalities combine in operational settings) is asserted but not developed in depth in this single source; corroborating sources would support promotion beyond emerging.