ON THE BORDER OF SCIENCES ON THE BRAIN.
The science that studies the brain is one, and its division on the psychology of "physiology and anatomy to a large extent arbitrary. With the advent of electronic devices, this face was barely visible - all the sciences are accurate and complete each other. Research Methods "messed up" so that it is difficult to tell what belongs to science, one or another method. Here we go about measuring a reaction time of man. This method of investigation was considered a method of experimental psychology, but we'll: How it is now used for anatomical and physiological studies.
Our brain analyzes the impulses coming to it from the senses and compares them with the information recorded in its memory, and, finally, takes any decision. To carry out all these operations take time.
With the development of precision mechanics and electronics in particular have learned to measure tenths of a millisecond in the brain. Scientists have identified a simple motor reaction time (such as "light bulb lit up - press the button"), measured the time required for the reaction to the choice (for example, "flashed the red light - no button-pushing, green lit - press"), have accumulated a large amount of factual material and concluded «The reaction of various individuals varies, it varies greatly and depends on many factors."
During this period, a method for measuring the reaction time was considered by the study of experimental psychology. Simple motor reaction time when using the view to the same person is in the range 140-220 m \ s. This range of changes, except for some average, could hardly give anything in the study of the brain. The question arose - as
reduce these fluctuations, how to use the time parameter to study the structure of the brain? And this is a problem of anatomy and physiology.
Human nervous system is symmetrical. The brain has two hemispheres. The right hemisphere controls the left half of the body, left - right. The length of the same neural pathways, hence, reaction time and the right and left hands should be equal.