Gestures May Help the Brain 'See'02/09/11
WEDNESDAY, Feb. 9 (HealthDay News) -- Gesturing with your hands
while talking can generate mental images that help solve complex
problems related to spatial visualization, new research shows.
Spatial visualization -- the ability to mentally rotate or move
an object to a different position or view -- is an important skill
for students and professionals such as air traffic controllers and
interior decorators, the researchers said.
They examined the relationship between hand gestures and spatial
visualization in three experiments that included a total of 230
volunteers. One study found that hand gestures increased as the
difficulty of mental rotation tests increased, and the other two
studies showed that the use of hand gestures was associated with
improved results on such tests.
The findings are reported in the February issue of the
Journal of Experimental Psychology: General.
"Hand gestures are spontaneous and don't need to be taught, but they can improve spatial visualization," study co-author and psychologist Mingyuan Chu said in a news release from the American Psychological Association. "From Galileo and Einstein to da Vinci and Picasso, influential scientific discoveries and artistic masterpieces might never have been achieved without extraordinary spatial visualization skills."
The researchers said that hand gestures may boost spatial
visualization by helping a person keep track of an object in the
mind as it is rotated to a new position. The gestures may also
provide additional feedback and visual cues by simulating how an
object would move if it were held in the hands.
The findings may have practical uses in education, suggested
Chu, a research fellow at the Max Planck Institute for
Psycholinguistics in the Netherlands. For example, art students
could use hand gestures in a still-life class to picture a subject
from a different angle to create a more vivid, three
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