In our opinion there is still confusion about the exact meaning of the term negation. As a consequence of this the importance of negation in the psychotherapeutic work is until now underestimated.

For psychiatrists who work according to Fagioli's human birth theory the concept of negation is fundamental. Negation is a notion that refers to unconscious reality.

The task of the psychiatrist is to identify and to interpret the negation in the deformed dream images during the psychotherapeutic process.

In contrast to an intentional lie, which is communicated through verbal speech, negation corresponds to unconscious thoughts, which we can find in dreams. During sleep a transformation occurs, language is altered and expressed through images. Negation deforms the image. This deformation of the image happens in an unconscious process. This negation distorts the reality of the patient and his ability to interact with the other. Corresponding the relationship will be aggressive/destructive. The only way to identify this deformation is dream interpretation.

Through this therapeutic process the patient will be able to intuit and realize instead of negate the positive qualities of the other and integrate these into his reality. Only human interaction that is free from negation enable the patient to overcome the ideo-affective splitting, which allows recovery of positive affects and the possibility of developing evolutive relationships.

Only a clarification of the term negation allows a psychotherapeutic process with the aim of developing evolutive relationships.

In psychotherapy, the object of study is not directly perceptible and material, but involves human mind complexity and specific content

In psychotherapeutic relationship we propose a method to inspect by deduction non-conscious mind, patient hidden mood, hate, affectivity.

The aim of this work is using a modern physics research method in psychotherapy, in order to focus on what is not directly perceptible in clinical practice.

We can examine, instead of 'inductive method”, the 'deductive method”, adapted from physics theoretical approach. We have taken into consideration 'Human Birth Theory”, formulated in 1971 by psychiatrist Fagioli. The author conceived the beginning of human life as a neuropsyche reaction to light. Given the intrauterine dark, Fagioli deducted that brain at birth are activated by 'the absolutely new stimulus”, light. He also deducted 'vitality” and 'capability to imagine” as non-conscious mind features. We have checked recent neurobiological data in literature.

Functional maturation of 'subplate zone”, light-inducted Immediate Early Genes activation, SATs variations, from foetus to newborn, retina instant activation by photon, 'viability” support Fagioli’s theory.

In relativistic physics and quantum field theory, deduction is finalised to discover hidden processes, in order to know the primum movens, not perceptible. In psychodynamic psychotherapy, the object par excellence is not just brain, like in neurology, but psyche. Its content is not directly knowable, but can be known also by deductive method, involving intuition, together perception of patient. In psychotherapy physics method can be applied, to discover the non-conscious thought, previous to pathological behaviour. Clinical examples can be reported.