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Abstract:
Man is a verbal and visual subject. Many times we have do use
words to describe what we are seeing, and most of the time we have
to visually imagine what we are hearing. The present work was
designed to study the correlation between language and vision in
two different contexts. In the first one (E1), verbal information
associated to its visual illustration were presented to subject
having their EEG recorded. In the second experiment (E2), only the
verbal information was provided to the volunteers. Verbal
information was a story produced by a professional writer,
published on a magazine, speaking about funny music concert. This
story was illustrated by a professional cartoonist. After the
verbal and the verbal plus visual information were presented to the
respective experimental groups, all volunteers have to assigned
pictures to selected pieces of the verbal information. Video-games
were designed to present information and record to the volunteer's
responses. Event Related Averaged Activity was used to provide
functional brain imaging mappings (ERFM) associated to defined
events of each video-game. ERFMs showed that left hemisphere
activation predominated on half of E1 volunteers, and right
hemisphere recruitment characterized the other half. E2 people
showed a predominant bilateral frontal-occipital activation. The
main conclusion is that listening, seeing and imagining are
supported by different neural circuits.
Supported by FAPESP
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