Conscious or dreaming people having above-threshold stimuli are aware of stimulus energy flow, density, pressure, flux, or amplitude {perceptual intensity}. For example, vision has brightness, and hearing has loudness. Conscious or dreaming people having below-threshold stimuli do not experience intensity. Unconscious people have no intensity awareness. For vision, intensity ranges are specular reflection, brilliant white, white, light gray, gray, dark gray, and black. For sound, ranges are whisper, normal, and intense. For touch, ranges are tickle, light pressure, touch, push, and pain. For taste, ranges are hint, full, and intense. For smell, ranges are whiff, signal, light, definite, strong, and pain.
properties
Intensities comes from surfaces. Intensity is about energy flow, not space or time, but has space and time locations. Sense-receptor membrane depolarization measures intensity, and neuron axon-impulse rate measures intensity. Perceptual intensity depends on stimulus intensity, nearby intensities, memories, and expectations, so intensity is relative. Perceptions do not have actual energy. Intensity has just-noticeable, dull, average, acute, and painful levels. Smallest intensity results from several energy quanta. Intensity is continuous, not continual or discrete. Intensity typically changes, flickers, or fades. Intensity has contrasts.
quality
People do not experience pure intensity. For perceived surface points, perceptual processing integrates remembered and current information about physical-stimulus intensity level and energy type, such as light, into non-physical quality, such as phenomenal bright red, pale yellow, or dark brown. Perceptual intensity and quality unite.
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Date Modified: 2022.0224