One last note would be addressed to the notion of sensorimotor simulation. The whole theory of the sensorimotor paradox lies on the idea that motor enaction of a contradictory situation, such as gazing at one’s own hand and the impossibility to catch it with itself, is subtituted by its imaginary outcome, which gets disconnected from the very need to enact sensorimotor impulse in the first place. Yet, the fact that the enaction of the impulse is contradicted, that the neural response is ‘delayed or lagged’ (to borrow from Gerald M. Edelman’s condition for self-consciousness) doesn’t mean that the impulse doesn’t come from the same place ; that is, that our imagination and stream of thought don’t come from the same neural system, only diverted from the possibility that the impulse should be enacted physically but contained, confined to the limits of the production of mental images and self-induced memory.
One empirical experience that could stress that, is that if one gets to mentally represent to themselves a continuous piece of music or sound, for example, that mental representation would be systematically cut off by physically emitted sounds such as breathing or tapping with one’s fingers – which are both a way that grounds us back to our present reality, as investigated by psychoanalyst Darian Leader in Hands (Hamish Hamilton, 2016). If I imagine a continuous sound, for instance an organ playing one continuous note, and I breathe in, even for half a second the sound that I imagine will be interrupted by the perception of the actual sound of my breathing – as I perceive it by the same way that I neurally perceive what I mentally produce from a reconstituted memory. Beyond speaking for a question of paying attention to two different things simultaneously, this kind of phenomenon supports the idea of emitting both a physical and mentally represented sound being physiologically impossible. I could be thinking or having a music playing in my head and still hear what is around me without the latter perturbing the continuity of my mental activity. But, it is something else when it comes to being able to think and emit a sound at the same time by whatever means. (The question should be addressed differently as to the linguistic experience of hearing impaired or deaf people, notably, as communication would be centred on other sensorimotor and memory organisations.)
This means that somehow, they have an equal value as to the origin of the experience, whether physically enacted or mentally simulated, which supports again the theory of the sensorimotor paradox. We can see the stream of thought, for instance, as a preparation of an action that is looped and continuously delayed. But, as soon as one sound is enacted from the body, it liberates motor enaction in its relation to sound perception and releases the effort of neural looping. We can triangulate the sensorimotor paradox hypothesis with Gerlad M. Edelman’s condition for self-consciousness and the fact that, as far as the physical action of emitting whatever sound is concerned, we cannot physically enact it and imagine it at the same time – in the same way that we can’t be with the hand and catch the hand with itself at the same time. Thus, to think and emit mental representation is a neural contraction that requires much more energy and tension than we think.
This note is meant to support further synthesis and elaboration from the theoretical corpus already existing on the matter. So it seems, things only just began.