 |
MEETINGS FOR 2009-2010
Wednesday 10 February 2010 |
Colour Deceits and Demonstrations
Oliver Thompson Theatre, Tait Building, City University
Arthur Tarrant will
present his famous Colour
Demonstrations assisted by Andrew Hanson
Prof Christopher Kennard
from Clinical Neurology, Oxford will deliver his lecture
The Visual Brain -
the House of Deceits of the Sight
see:
http://www.clneuro.ox.ac.uk/research/oculomotor-research-group
When we look at
the world around us the large area of the brain devoted to vision – the
visual brain - processes the
images received
by our eyes, yet how are all the attributes of the visual scene - form,
colour, motion, depth and much
else besides -
processed in separate but interconnected cortical areas, which then
generate a unitary visual percept?
There are many
different methods to study the visual brain, but here the focus will be
on the use of visual illusions,
brain imaging in
normal subjects and the visual consequences of damage to different
parts of the visual brain in patients
after a stroke.
For example, some of these patients can identify patterns and shapes
but not colour, whereas others are
unaware of
movement, or fail to recognise familiar faces or objects. It will
become apparent that the visual brain often has
to generate
hypotheses to interpret the inputs from the visual scene, and this may
lead to discrepancies between
perception and
reality leading to “deceits of the sight” (Sir Francis Bacon).
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