AI Article Synopsis
- In the word-stem priming test, participants recall words based on three-letter stems after previously seeing related words, demonstrating implicit memory.
- Amnesic patients with medial temporal lesions can still perform well on this test, unlike Alzheimer's patients, who show impairments, indicating that neocortical damage affects priming.
- Patients with unilateral temporal-occipital lesions also displayed significant deficits in word-stem priming, highlighting the importance of the inferior posterior neocortex in implicit memory expression.
Article Abstract
In the word-stem priming test, words are presented (e.g., MOTEL, PARADE), and later subjects are shown three-letter word stems (e.g., MOT, PAR) and asked to complete each stem with the first word that comes to mind. Word-stem priming, as well as other aspects of implicit memory, are intact in amnesic patients with medial temporal lesions. However, this form of priming has been shown to be impaired in patients with Alzheimer's disease, suggesting that damage to neocortical areas outside the medial temporal lobe contributes to impaired priming in these patients. To examine the role of posterior cortical areas on word-stem priming, we administered the test to patients with unilateral temporal-occipital lesions. Patients with temporal-occipital lesions exhibited significantly impaired priming on this test. The findings suggest a critical role of the inferior posterior neocortex in the expression of this form of implicit memory.
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| http://dx.doi.org/10.1016/s0028-3932(97)00036-5 | DOI Listing |
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