PSY 252 Lecture Notes - Lecture 17: Lip Reading, Phoneme, Categorical Perception
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There is more than just the speech that is important, visuals are important as well. It is(cid:374)(cid:859)t just the audito(cid:396)(cid:455) sig(cid:374)al used fo(cid:396) spee(cid:272)h pe(cid:396)(cid:272)eptio(cid:374) In this experiment they have subjects look at a video screen as they watch someone make a speech sound such as (cid:858)ga(cid:859). Ho(cid:449)e(cid:448)e(cid:396), the(cid:455) pla(cid:455) a sou(cid:374)d su(cid:272)h as (cid:858)ba(cid:859) over the speaker. They see (cid:858)ga(cid:859) but hear (cid:858)ba(cid:859) and most people would say they perceived (cid:858)da(cid:859) instead of either (cid:858)ga(cid:859) or (cid:858)ba(cid:859). When there is incongruences between the two signals, the brain receives the info from both and tries to problem solve and comes up with a new form. We also use visual information to interpret speech sounds. Bill video where they repeat the sound (cid:858)bill(cid:859) but change the image to be a pail or a mayo container, (cid:455)ou hea(cid:396) it to (cid:271)e (cid:449)hate(cid:448)e(cid:396) the i(cid:373)age is of.
