334 |
(see, e.g.,~Bruce et al\cite{bruce96visualperception}): |
(see, e.g.,~Bruce et al\cite{bruce96visualperception}): |
335 |
in the visual cortex, there are cells sensitive to different |
in the visual cortex, there are cells sensitive to different |
336 |
frequencies, orientations, and locations in the visual field. |
frequencies, orientations, and locations in the visual field. |
337 |
On a higher level, correlating local features are combined |
On a higher level, the correlations between local features are combined |
338 |
to global perception, by forming contours and possibly |
to global perception, by forming contours and possibly |
339 |
other higher-level constructions. |
other higher-level constructions. |
340 |
These higher levels are not yet thoroughly understood; |
These higher levels are not yet thoroughly understood; |