a data stream 27 with embedded mental state targets the terminal 2 will gradually adjust the immersiveness of the audiovisual content data consumption experience by selectively turning on and off or up and down settings such as audio volume audio wideness color saturation color output of ambient lighting devices etc thus a system along the lines of that shown in fig4 is also capable of influencing the mental state of users of a terminal 2 in accordance with instructions generated using a remote authoring system 1 and conveyed to the terminal 2 in a data stream over a network 6 or on a data carrier 3 it should be noted that the above mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims in the claims any reference signs placed between parentheses shall not be construed as limiting the claim the word u201c comprising u201d does not exclude the presence of elements or steps other than those listed in a claim the word u201c a u201d or u201c an u201d preceding an element does not exclude the presence of a plurality of such elements the mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage it will be appreciated that the emotion scene composition segments and sensory scene description segments can be stored as objects on the data.