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Re:TheAshLad - Sandbooks

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shortterm. memory for faces.. Although language is usually located in<br />

the left hemispherein a. small percent age of peoplemost of them<br />

lefthandedlanguage is. represented in the right hemisphere.. The<br />

auditory system is not as completely crossed as the. visualbecause both<br />

hemi spheres receive projections from each ear.. Tests Showing a<br />

RightEar Advantage Digits Words Nonsense. syllables Formant<br />

transitions Backward speech Morse code Difficult. rhythms Tone used<br />

in linguistic decisions Tonal sequences with. frequency transitions<br />

Ordering temporal information Movementrelated. tonal signals. Tests<br />

Showing a LeftEar Advantage Melodies Musical chords.<br />

Environmental sounds Emotional sounds and hummed melodies Tones.<br />

processed independently Complex pitch perception. The Kimura<br />

experiments imply that the left hemisphere is specialized. for<br />

processing languagerelated soundswhereas the right hemisphere.<br />

processes musicrelated sounds.There ishoweveranother.<br />

interpretation.It is possible that the asymmetry is related to the.<br />

temporal or spectral structure of the sounds their rhythm and. frequency<br />

rather than to language and music themselves.Considerfor. examplethe<br />

finding by Papcun and colleagues. They showed that. Morsecode<br />

operators have a rightear superiority for the perception. of the codeeven<br />

though the sounds are distinguished only by their. temporal structure..<br />

Rudel and coworkers found that both blind and sighted subjects read.<br />

Braille more rapidly with the left hand.Some children are actually.<br />

fluent readers with the left hand but are totally unable to read with. the<br />

right.Because Braille patterns are spatial configurations of dots. this<br />

observation is congruent with the proposal that the right. hemisphere<br />

has a role in processing spatial information that is not. shared by the<br />

left.. Candace Gibson and Phil Bryden presented subjects with cutouts<br />

of. irregular shapes or letters made of sandpaperwhich were moved<br />

slowly. across the fingertips.Their subjects showed a righthand advan<br />

tage. for identifying letters and a lefthand advantage for denti fying.<br />

other shapes.. The right side of the mouth opens wider and more<br />

quickly than the. left for both verbal and nonverbal tasks.Goodale s<br />

observations. support the idea that the left hemisphere has a special role<br />

in the. selectionprogramming and production of verbal and nonverbal<br />

oral. movements. Is there an analogous role for the right<br />

hemisphereIndeed. there is. Considerable evidence shows that the left<br />

side of the face. displays emo tions more strongly than the right sideand<br />

Goodale. showed that the onset of facial expressions occurs sooner on<br />

the left. side of the face.. What Is Lateralized It is tempting to conclude<br />

97

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