Although there are numerous theories of the structure of semantic memory, a notion central to many of these theories is that of semantic category membership. The present studies represent an investigation of the effects of a semantic category relation between prime and target in a picture-naming task. Because picture naming is presumed to require access to semantic memory, category priming effe...

We report a patient, PP, with semantic dementia who was studied longitudinally over two years. During this period she showed a progressive and profound loss of semantic memory affecting factual knowledge, vocabulary, and object knowledge via all sensory modalities. In the face of this near total dissolution of semantic memory, we have addressed the issue of the fate of other cognitive processes...

The distinction between episodic and semantic memory is elaborated and applied to consumer processing of advertising messages. It is argued that epi sodic memory, the storage of information about speelic events, probably plays a more significant role in adiertising's effects than has been attributed to it. Episodic memory is then applied to questions concerning the role that emotional appeals p...

Studies in macaque monkeys indicate that the perirhinal cortex in the temporal lobe participates in object memory. This function may be analogous to aspects of human semantic memory (knowledge of objects, concepts, faces and words). To date, the status of perirhinal cortex has not specifically been investigated in patients with semantic deficits as seen in semantic dementia, the temporal lobe v...

Episodic and semantic memory are two forms of declarative memory which appear to function in distinct yet interdependent ways. Here we provide direct evidence for a functional relationship between these two memory systems by showing that left lateral temporal lobe regions involved in semantic memory play an important role in accurate episodic memory retrieval.

In Alzheimer's disease (AD) patients, episodic memory impairments are apparent, yet semantic memory difficulties are also observed. While the episodic pathology has been thoroughly studied, the neurophysiological mechanisms of the semantic impairments remain obscure. Semantic dementia (SD) is characterized by isolated semantic memory deficits. The present study aimed to find an early marker of ...