ABSTRACT
Having established various specific behavioral indicators for the functions of these areas of the cortex, the next problem was to discover the psychological meaning of the indicators. Much as a Babinsky sign is an indicator of improper functioning of the spinal pyramidal motor system, the psychologists now had available signs of malfunction of brain cognitive and related systems. In order to define the meaning of the behavioral indicators the psychologists had to explore the limiting factors for these deficits in a wide range of the behavioral tasks. However interpretation was seldom straightforward, in part due to the lack of agreement about the constructs used in experimental psychology. The controversy hinges solely on whether the disconnections are in fact total, as it is suggested by input theorists that even a small remnant of connectivity is believed sufficient to mediate an input.
