Hypercomplex cell

Hypercomplex cells- Hubel and Wiesel named cells in the visual cortex that exhibit end stopping properties hypercomplex cells, but later research has found them to be subclasses of the simple and complex cells. End stopping is when a cell's response increases as a stimuli- for example a bar- expands to fill the receptive field, and then respond less when the stimuli exceeds the size of the receptive field