Instead of presenting the sound of the tone, let's imagine that he sounded a trumpet. If the dogs DID NOT drool in response to the trumpet noise, it means that they are able to discriminate between the sound of the tone and the similar stimulus.
Oct 12, · VA Presents Evolution Let There Be Light-CDhM. 1. Marcus Schulz – Do You Dream (Evolution Anthem) 2. Dennis de Laat – Sound Of Violence 3. Tiesto & Sneaky Sound System – I Will Be Here Everything Is Different Now 5. It's Not Over 6. Rescue 7. Only One 8. Never Let Go 9. Until My Heart Caves In.