Deaf individuals who receive a cochlear implant as adults typically do not regain as much of their hearing as people who receive the implants as young children. Why?
What will be an ideal response?
This is because when a child is born deaf, the brain reorganizes itself. Brain regions that would usually function in hearing do not simply sit idle, but rather are recruited to function in vision. Thus, deaf people often have more acute vision than those with normal hearing. Once this reorganization occurs early in life, it is largely irreversible. The brain of a deaf adult who receives a cochlear implant cannot re-reorganize itself to begin processing auditory information.
You might also like to view...
Which organisms reproduce both sexually and asexually?
a. plants and fungi b. animals only c. plants only d. plants and animals
In most eumetazoans the outermost tissue layer during development is the
a. mesoderm. b. epiderm. c. mesoglea. d. endoderm. e. ectoderm.
What gene encodes a protein that will inhibit cell division?
A) angiogenesis inhibitor B) growth factor C) oncogene D) tumor-suppressor gene
A botanist discovers a new species of land plant with a dominant sporophyte, chlorophylls a and b, and cell walls made of cellulose. In assigning this plant to a phylum, which of the following, if present, would be LEAST useful?
A) endosperm B) seeds C) flowers D) spores