Online research in philosophy

O'Regan & Noë's (O&N's) explanation of our stream of experience as activities depends on their denial of that palpable, most real aspect of experience: what they call “qualitative experience.” Given the ontological primacy of the qualitative givenness of our experience and the complete absence of actions as experiences in our stream of consciousness, though, all such reductionistic attempts must fail.

I agree with Revonsuo that dreaming, particularly about risky scenes, has a great selective advantage. Although the paleoamygdala system generally facilitates stress and alarm, the system which inhibits stress and alarm, initiates bold actions, and mediates learning in risky scenes is the arche, hippocampal system (Papez circuit). Because all thalamic nuclei are inhibited during sleep except arche, Papez probably also dreams in risky scenes. [Revonsuo].

Fornix problem: Why do lesions of the fornix, which connects the hippocampus (HF) to the medial mammillary nucleus (MMN), often cause no deficits in tasks severely affected by lesions of HF or MMN? Solution: The direct HF feedback to antero ventral (AV) thalamus (MMN [Rightarrow A: implies] AV [Leftrightarrow A: l&r dbl arrow] HF), which is blocked by MMN lesions but not fornix lesions, is sufficient for nonscene-relevant consolidation.