Fig. 4From: Is humane slaughtering of rainbow trout achieved in conventional production chains in Germany? Results of a pilot field and laboratory studyAveraged visually-evoked response (VER, n = 512 signals) in the electro-encephalogram of rainbow trout. Upper line: electro-encephalogram of a rainbow trout, lower line: trigger pulse. a neuronal responses were triggered by light flashes. The onset of the VER corresponds to the trigger pulse. b averaged control condition without light stimulus. Grid: 50 ms and 50 μV, respectivelyBack to article page