Skip to Main Content

++

Physicians sooner or later discover, through clinical experience, the need for special competence in assessing the mental faculties of their patients. They must be able to observe with objectivity the patient's attention, intelligence, memory, judgment, mood, character, and other attributes of cognitive performance, and personality in much the same fashion as they observe the patient's movements, gait, and reflexes. The systematic examination of these intellectual and affective functions permits the physician to reach conclusions regarding the patient's mental status and its relationship to his illness. Without such data, there are likely to be errors in the diagnosis and treatment of the patient's neurologic, general medical, and psychiatric disease.

++

The content of this section will be more clearly understood if a few of the introductory remarks to the later section on psychiatric diseases are anticipated here. The main thesis of the neurologist is that mental and physical functions of the nervous system are simply two aspects of the same neural process. Mind and behavior both have their roots in the self-regulating, goal-seeking activities of the organism, the same ones that provide impulse to all forms of mammalian life. But the prodigious complexity of the human brain permits, to an extraordinary degree, the solving of difficult problems, the capacity for remembering past experiences, and casting them in a symbolic language that can be written and read, and the planning for events that have yet to take place. The constant but sometimes meandering internal verbal experience of this ideation during waking was aptly named "stream of thought" by William James. Somehow there emerges in the course of these complex cerebral functions a continuous awareness of one's self, and the operation of one's psychic processes. It is this continuous inner consciousness of one's self, of one's past experiences, and of ongoing cognitive activities that might be called mind. Whether this is an emergent property of various mental functions or simply their representation cannot be answered, but any separation of the mental from the observable behavioral aspects of cerebral function is probably illusory. Biologists and psychologists have reached this view by placing all known activities of the nervous system (growth, development, behavior, and mental function) on a continuum and noting the inherent purposiveness and creativity common to all of them. The physician is persuaded of the truth of this view through daily clinical experience, in which every possible aberration of behavior and intellect appears at some time or other as an expression of cerebral disease. Furthermore, in many brain diseases, one witnesses parallel disorders of the patient's behavior and a dissolution or distortion of the introspective awareness of his own mental capacities.

++

The reader will find that Chaps. 20 and 21 are concerned with common disturbances of the sensorium and of cognition, which stand as cardinal manifestations of cerebral diseases. The most frequent of these are delirium and other acute confusional states, as well as disorders of learning, memory, and other intellectual functions. A consideration ...

Want remote access to your institution's subscription?

Sign in to your MyAccess profile while you are actively authenticated on this site via your institution (you will be able to verify this by looking at the top right corner of the screen - if you see your institution's name, you are authenticated). Once logged in to your MyAccess profile, you will be able to access your institution's subscription for 90 days from any location. You must be logged in while authenticated at least once every 90 days to maintain this remote access.

Ok

About MyAccess

If your institution subscribes to this resource, and you don't have a MyAccess profile, please contact your library's reference desk for information on how to gain access to this resource from off-campus.

Pop-up div Successfully Displayed

This div only appears when the trigger link is hovered over. Otherwise it is hidden from view.