CH14 Cognitive Functions
Study Guide for CH14: Cognitive Functions
Stop & Check
Module 14.1: 4, 5, 6, 7*, 8
In humans, light from the right visual field shines on the left
half of each retina, which
sends its axons to the left
hemisphere of the brain.
Can a split-brain person name an object after feeling it with the left hand?
With the right
A split-brain person cannot describe something after feeling it with the left hand but can
with the right.
The right hand sends its information to the left hemisphere, which is
dominant for language in most people.
The left hand sends its information to the right
hemisphere, which cannot speak.
After a split-brain person sees something in the left visual field, how can he or she
describe or identify the object?
After seeing something in the left visual field, a split-brain person could point to the
correct answer with the left hand.
Which hemisphere is dominant for each of the following in most people:
emotional inflection of speech, interpreting other people’s emotional expressions, spatial
relationships, perceiving overall patterns?
The left hemisphere is dominant for speech; the right hemisphere is dominant for all the
other items listed.
A child born without a corpus callosum can name something felt with the left hand, but an
adult who suffered damage to the corpus callosum cannot.
What are two likely
In children born without a corpus callosum, the left hemisphere develops more than the
usual connections with the left hand, and the anterior commissure and other
commissures grow larger than usual.
Module 14.2: 2*, 3, 4*, 6, 7*, 9*
What are three likely explanations for why the bonobos made more language progress
than common chimpanzees?
Bonobos may be more predisposed to language than common chimpanzees.
bonobos started training at an earlier age.
They learned by imitation instead of formal
What evidence argues against the hypothesis that language evolution depended simply
on the overall evolution of brain and intelligence?
Some people have normal brain size but very poor language.
Also, some people are
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