The spelling of the phrase "apparent motion" corresponds with its phonetic transcription. In IPA, the first syllable is pronounced /əˈpærənt/ with a schwa sound followed by a stressed long "a" sound. The second syllable has a short "e" sound /məʊʃən/. The combination of the two syllables creates a two-syllable word with three stressed phonemes. "Apparent motion" refers to the visual illusion that refers to the perceived movement of an object that is actually stationary.
Apparent motion refers to the visual perception of movement where none actually exists. It is the illusion created when stationary objects appear to move or change position due to certain visual stimuli or conditions. This concept is grounded in the limitations of human visual perception and how it interprets visual cues.
In the context of psychology and visual perception, apparent motion occurs when two or more static images or objects are presented in quick succession to the viewer. This rapid presentation creates the perception of motion, as the viewer's brain connects these discrete images and interprets them as a continuous movement. Apparent motion can also be observed when a stationary object is viewed through a moving background, leading to the impression that the object is in motion.
Apparent motion plays a significant role in several areas, including animation, film-making, and visual effects. By manipulating the timing and sequencing of static images, animators and filmmakers can create the illusion of motion and bring their creations to life. It is also commonly utilized in motion perception research to study how the brain processes visual information and identifies movement.
Overall, apparent motion illustrates the intricate relationship between the physical properties of visual stimuli and the interpretive abilities of the human visual system, often resulting in perceiving motion where there is none in reality.
The term "apparent motion" is a combination of "apparent" and "motion", both of which have distinct etymologies:
1. "Apparent":
- It comes from the Latin word "apparens", which is the present participle of "apparere".
- "Apparere" is derived from the combination of "ad" (meaning "to") and "parere" (meaning "to appear or be visible").
- Ultimately, it can be traced back to the Proto-Indo-European root "per-", which carries the meaning of "to bring forth, to be visible".
2. "Motion":
- It comes from the Middle English word "motion", which is derived from the Old French word "motion" or "mocion".