IIT and GNWT met several hurdles in the competition.
- The first hurdle checked how well each theory decoded the categories of the objects that the subjects saw in the presented images. Both theories performed well here, but IIT was better at identifying the orientation of objects.
- The second hurdle tested the timing of the signals. IIT predicted sustained, synchronous firing in the hot zone for the duration of the conscious state. While the signal was sustained, it did not remain synchronous. GNWT predicted an “ignition” of the workspace followed by a second spike when the stimulus disappeared. Only the initial spike was detected. In the on-screen scoring for the NYU audience, IIT pulled ahead.
- The third hurdle concerned overall connectivity across the brain. GNWT scored better than IIT here, largely because some analyses of the results supported GNWT predictions while the signals across the hot zone were not synchronous.
- TGD inspired theory of consciousness is essentially quantum measurement theory involving what I call zero energy ontology, which solves the basic paradox of quantum measurement. Also quantum coherence in arbitrarily long scales is possible by the hierarchy of Planck constants labelling phases of ordinary matter behaving like dark matter. Not only the brain but also the magnetic body of the brain are involved with the process.
- Generation of mental images, perception, is basically a quantum measurement i.e. state function reduction (SFR) in TGD sense. There are "small" SFRs (SSFRs) and "big" SFRs (BSFRs). A sequence of SSFRs corresponds to a sequence of repeated measurements of sets of observables which commute with each other (this set can gradually increase as perception becomes sharper): a generalization of the Zeno effect or rather of weak measurement of quantum optics is in question. Each SSFR in the sequence gives rise to qualia. This process gives rise to a mental image as a conscious entity, subself of self. Each SSFR in the sequence gives rise to qualia. Attention as a sequence of repeated measurements involving the same observables would correspond to a sequence of SSFRs.
BSFR, which generalizes ordinary quantum measurement, occurs when new observables not commuting with those measured in previous SSFRs are measured. In BSFR the arrow of time changes. In a pair of BSFRs in which the arrow of time temporarily changes and it gives rise to new percept. This certainly involves firing. The original mental image as a conscious entity dies and reincarnates with the opposite arrow of time (also I am a mental image of some higher level self). A pair of BSFRs leads to the original arrow of time and corresponds to quantum tunnelling.
- Holography of consciousness is essential. The mental image generated in SSFR lasts and until the next SSFR occurs and possibly modifies it. The outcome of quantum measurement as SSFR and also BSFR thus defines analog of holographic data. If new observables commuting with the original ones are measured in the next SSFR they make the percept more precise and conscious experience changes. The percept can also become less sharp when less observables are measured.
- If synchronous firing could be related to SSFRs it would happen in each modification of mental images as it sharpens or becomes dimmer. The gradual loss of synchrony could relate to the dimming. The synchronous firing occurs only when the mental images are created, say in eureka experience, but does not last the entire duration of the percept as found by Revonsuo a long time ago. No spikes need to occur when the stimulus disappears unless the observer is ready to detect this.
For a summary of earlier postings see Latest progress in TGD.
For the lists of articles (most of them published in journals founded by Huping Hu) and books about TGD see this.