Neuromodulation of Word Meaning Selection
نویسنده
چکیده
Processes of word meaning generation, word association and understanding are known to be impaired in schizophrenia and related diseases. Word meaning selection requires the involvement of prefrontal cortex and processes of working memory and selective attention. Under the dopaminergic hypothesis of schizophrenia, the normal neuromodulatory activation of prefrontal cortex for the performance of working memory-related tasks is disturbed. We present a model of selective attention and its modulation by dopamine and show how abnormal levels of dopamine availability may lead to some of the observed impairments in word meaning selection, namely (a) failure to construct contextually appropriate meanings and (b) intrusions of phonological and episodic associative links within semantic processing.
منابع مشابه
آفریدگان یا پرورش یافتگان؟بررسی تحلیلی روایت «نحن صنایع الله و الخلق بعد صنایعنا»
One of the Imami hadith required to be investigated is assumed to be a documentation attributed to Imam Mahdi. In this hadith, which is "We are sanāye' (creation/ beneficence/ and selection) of God and then people are creation/ beneficence/ selection of us" there appears to be a complicated and apparently vague phrase. The present study seeks to reach to a complete and proper understanding of...
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