Göksoy, Ezgi (2014) INVESTIGATION OF THE EFFECT OF AGE ON SPEECH PERCEPTION BETWEEN AUDITION AND VISION(McGurk Effect). Other thesis, TED ANKARA KOLEJİ.
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Abstract
In case of an unnatural mismatch between the voice and mouth shapes of a speaker in a video, viewer perceives the sound based on mouth moves. By this way, perception of a voice different than the real one, occurs. This phenomenon, known as McGurk Effect, is one of the most well-known and distinctive illusions of human brain. Despite many investigations intended to, no research have clearly explained its mechanism. There are two possibilities on how McGurk Effect develops and works: Either it is a secondary effect appearing as a result of a present function, or a result of a defect of human brain. In this investigation, it is aimed to determine which of these possibilities is valid. For this purpose, effect of age on speech perception between audition and vision (McGurk Effect) is investigated. To determine the level of McGurk Effect a special video is prepared with digital montage. The mouth shapes of the speaker display “be-be”, whereas it has “de-de” sound. Later, the video was blurized in 10 steps. This final video was watched by 75 people from 5 different age groups. Each respondent was first shown the video with highest blur and was asked what he/she saw. Later, less blurized videos kept being shown until McGurk Effect appeared on the respondent. Blur level of video at which McGurk Effect occurred was accepted as the McGurk Level for the respondent. As a result, as age increased, McGurk Effect occurred at less blurized videos. These findings were also statistically meaningful. It is interpreted that, McGurk Effect weakened with aging. To conclude, McGurk Illusion is a secondary effect of a mental function, rather than a flaw and declines with increasing age like other metabolic functions.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | Name of the Supervisor: Hatice Özmen, IB Notu: B |
| Uncontrolled Keywords: | McGurk Effect, voice, mouth shapes |
| Subjects: | Q Science > QH Natural history > QH301 Biology |
| Depositing User: | Kamil Çömlekçi |
| Date Deposited: | 11 Sep 2014 11:14 |
| Last Modified: | 11 Sep 2014 11:14 |
| URI: | http://tedprints.tedankara.k12.tr/id/eprint/502 |
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