In human audition, a sound wave's physical characteristics directly correspond to specific psychological perceptions. The frequency of a sound wave is experienced as its pitch, whereas the amplitude of the wave is experienced as its loudness.

Relationship Between Physical Properties of Sound Waves and Auditory Perception

In human vision, the physical properties of a light wave directly determine our perceptual experience. The wavelength and its associated frequency dictate the perceived color or hue of the light. Meanwhile, the amplitude determines the perceived intensity or brightness of that light.

Relationship Between Physical Properties of Light and Visual Perception

The two types of waves for perception are: 

1. Light Waves (Visual Stimuli) 
2. Sound Waves (Auditory Waves) 

Visual and auditory stimuli occur as waves. 

Waves in Sensation and Perception within Psychology

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

OpenStax Psychology (2nd ed.) Textbook

Visual stimuli (light) and auditory stimuli (sound) are both transmitted as wave forms. These waves are defined by specific physical characteristics, most notably their amplitude, wavelength, and timbre.

Physical Characteristics of Waves in Sensation and Perception

Types of Waves

The electromagnetic spectrum is the complete range of electromagnetic radiation in the environment, organized by wavelength and frequency. It includes gamma rays, X-rays, ultraviolet light, visible light (which occupies a relatively small range of frequencies between infrared and ultraviolet), infrared light, microwaves, and radio waves.

Classification of the Electromagnetic Spectrum

A researcher is comparing the physical nature of the stimuli responsible for the senses of sight and hearing. What is the most fundamental characteristic that the physical stimuli for *both* of these senses share, which distinguishes them from the stimulus for the sense of touch?

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