St Anton am Arlberg the Steissbachtal trail just above St. Anton. The groomed runs in the region cater to all levels; 43% are for beginners (blue), 41% for intermediate skiers (red) and 16% are for the more advanced (black). There are also of deep snow runs in the area. Expert terrain includes less-frequently groomed ski routes such as Schindlerkar and Mattun, and the backside of Valluga () down to Zürs, which is for experts only if accompanied by a guide. There are also a large number of off-piste routes in the area that experts can explore with the help of a guide. Other ski
Colour centre colour centre begins in V1 and sends signals to extrastriate areas V2 and V4 for further processing. V4 in particular is an area of interest because of the strength of the colour receptive fields in its neurons. V4 was initially identified in macaque monkey visual cortex experiments. Originally, it was proposed that colour was selectively processed in V4. However, this hypothesis was later rejected in favour of another hypothesis which suggested that V4 and other areas around V4 work together to process colour in the form of multiple colour selective regions. After identification of V4 as the colour-selective region in