Passage: Theoretical background of biology, as is the case with modern natural sciences in general, is fundamentally materialist. The objects of study are, in the first place, physical processes, which are considered to be the foundations of mental activity and behavior. The increasing success of biology in the explanation of mental phenomena can be seen by the absence of any empirical refutation of its fundamental presupposition: "there can be no change in the mental states of a person without a change in brain states".Within the field of neurobiology, there are many subdisciplines that are concerned with the relations between mental and physical states and processes: Sensory neurophysiology investigates the relationship between the processes of perception and perception. Cognitive neuroscience studies the constraints between mental and neuropsychological processes in general. Objects of study are, in the first place, physical processes, which are considered to be the foundations of mental activity and behavior. The increasing success of biology in the explanation of mental phenomena can be seen by the absence of any empirical refutation of its fundamental presupposition: "there
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