I’d study it in humans first - the advantage is they can talk. I’d study the way brain works in nostalgia feeling humans. Then I’d try to find the same or similar functionality in dog brains (which are fortunately similar enough, because dogs are evolutionarily relatively close to humans).
Let me again state that feelings are subjective even in humans and you could argue that what others really experience can be different even though it manifests the same externally. I’m knowingly ignoring this phylosofical side of the problem and I’m proposing a practical scientific way to approach it.
I’d study it in humans first - the advantage is they can talk. I’d study the way brain works in nostalgia feeling humans. Then I’d try to find the same or similar functionality in dog brains (which are fortunately similar enough, because dogs are evolutionarily relatively close to humans).
Let me again state that feelings are subjective even in humans and you could argue that what others really experience can be different even though it manifests the same externally. I’m knowingly ignoring this phylosofical side of the problem and I’m proposing a practical scientific way to approach it.