What occurs in psychosis is not clear. A shift in the proportions of activity, or perhaps a swap in the functioning roles of the two types neurons - pyramidal and non-pyramidal - could be what occurs in psychosis. It is more efficient for some tasks to use trivalent logic and more efficient for other tasks to use transvalent logic. It begs the question that if pyramidal neurons correspond to trivalent thinking, and if trivalent logic is more efficient for most tasks, "Why aren't all neurons pyramidal?" Some have said that transvalent logic divides bivalent reasoning into a spectrum of possibilities (1). If this is true, a nexus between the quantal probalistic realm and the microscopic realm of neurons could be found. Specifically, if both types of neurons function in multivalued logic, all neural activity could be classified and analyzed in terms of quantum mechanics. It happens that the statistics of quantum mechanics is a multivalued logic itself. It is predicted that the minimum number of projections in a neuron in an adult brain be limited to precisely two. Indeed, bivalent logic is predicted to correspond to the minimum number of projections since bivalent logic is the most minimalistic type.

The fact that pyramidal neurons have axons routed to motor ganglia of the body probably explains a connection between thinking and behavior. In the case of the psychotic, the nexus between pyramidal neurons and motor ganglia - the pyramidal neuron - might become seek to function as transvalent neurons or simply not function at all. Thus, all thinking would tend to become more transvalent. It turns out that transvalent thinking might often correspond to mystical or magical thinking. The behavior of the Freudian unrepressed subconscious as it occurs in psychotics might best be defined as disoriented trivalent thinking or malfunctioning pyramidal neurons.

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(1) John W. Campbell as referenced by "Analog Science Fact & Science Fiction" vol. LXXI, No. 6, August 1963, pp. 6, 92-94 See http://www.vordenker.de/gunther_web/subconscious.htm