SnuffelSensor met 8 armen

What if we could measure sniffing duration exactly? Could the duration of sniffing tell something about the dogs' accuracy? To answer such research questions, we built this Sniff Sensor Carousel. It is height adjustable and has eight rotating arms. Infrared sensors measure in milliseconds how long the dog's nose stays in each tube. The data is transmitted wirelessly to a computer.   With eight choices in the carousel, the chance of the dog guessing right four times in a row by a fluke is very small-1 in 4,096. This allows us to study their learning process and performance in detail.