In experiments evaluating how the creatures react to moving images, the animals responded far more vigorously to HDTV than standard definition TV.
It appears that standard definition moving images are not sufficiently "convincing" for the sophisticated cephalopods, say scientists from Macquarie University.
Researchers can now use HDTV as a tool to study elements of their behavior, such as personality.
Details of the discovery are published in The Journal of Experimental Biology.
Source: Macquarie University, BBC