Re:TheAshLad - Sandbooks

y using. different cueshoweverthe left hemisphere has an advantage
over he. right.Both hemispheres can name an object from its picture or
from its. descriptionbut the left hemisphere can identify the object on
the. basis of rhymes withwhereas the right hemisphere is oblivious to.
this type of cue.. In an analysis of reading skillsDennis and her
coworkers found that. both hemispheres had almost equal ability in
higherorder reading. comprehension howeverthe left hemisphere is
superior to the right in. reading and spelling unfamiliar words and in
using sentence structure. achieve fluent reading. The left hemisphere
also reads prose. passages with greater decoding accuracy more
fluencyand fewer errors. that violate the semantic and syntactic struc
ture of the. sentence.The superiority of the left hemisphere seems to be
its. ability to manipulate and exploit language rules.Yet the right.
hemisphere is not without its strengths in language.Performance is.
better with the right hemisphere in a task that requires learning an.
association between nonsense words and symbols.. In summarizing the
results of studies on languageDennis suggests. that if written language
structure is thought of as a combination of. meaning cues
(morphology)sound cues (phonology)and picture cues. (logography)
then the isolated left hemisphere will show superior. performance with
morphology and phonology and inferior performance. with logographic
cues.The isolated right hemisphere will show superior. performance
with logographic cues and inferior performance with. morphological
and phonological cues. Kohn and Dennis found an almost. analogous
pattern of results on tests of visuospatial function.They. observed
thatalthough patients with right hemispherectomies. performed
normally on simple tests of visuospatial functions such as. drawingthey
were significantly impaired on complex tests such as. negotiating a
maze and reading a map.. To summarizeeach hemisphere can assume
some of its opposite s. functions if the opposite hemisphere is removed
in he course of. development but neither hemisphere is totally capable
of mediating. all of the missing hemispheres functions.Thusalthough
the. developing brain gives evidence of considerable plasticitythere is.
convincing evidence against equipotentiality both hemispheres appear.
have a processing capacity that probably has an innate structural. basis..
All models of cerebral development must answer he question of how.
functions become restricted to one hemisphere rather than becoming.
bilateral. The interactive paralleldevelopment hypothesis answers. that
question.In a series of papersMorris Moscovitch emphasized the.
possibility that one hemisphere actively inhibits the otherthus.
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