ABSTRACT
Memory-related disorders are perhaps the most common consequences of neocortical damage. In their pure forms, these disorders range from disruptions of memory for the learned significance of specific environmental stimuli (sensory agnosia), to disruptions, on the output side, of learned behavioral sequences (apraxia). Agnosia and apraxia are defined on the basis of acquired, life history, knowledge; these disorders represent apparent losses of such knowledge, losses that often are overcome with specific retraining.
