Neuromodulatory Control and Language Recovery in Bilingual Aphasia: An Active Inference Approach.
Neuromodulatory Control and Language Recovery in Bilingual Aphasia: An Active Inference Approach.
复制标题
双语失语症中的神经调节控制和语言恢复:一种主动推断方法。
DOI:
10.3390/bs10100161
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发表时间:
2020-10-21
期刊:
影响因子:
--
通讯作者:
W Green D
中科院分区:
文献类型:
--
作者:
Sajid N;Friston KJ;Ekert JO;Price CJ;W Green D
Understanding the aetiology of the diverse recovery patterns in bilingual aphasia is a theoretical challenge with implications for treatment. Loss of control over intact language networks provides a parsimonious starting point that can be tested using in-silico lesions. We simulated a complex recovery pattern (alternate antagonism and paradoxical translation) to test the hypothesis—from an established hierarchical control model—that loss of control was mediated by constraints on neuromodulatory resources. We used active (Bayesian) inference to simulate a selective loss of sensory precision; i.e., confidence in the causes of sensations. This in-silico lesion altered the precision of beliefs about task relevant states, including appropriate actions, and reproduced exactly the recovery pattern of interest. As sensory precision has been linked to acetylcholine release, these simulations endorse the conjecture that loss of neuromodulatory control can explain this atypical recovery pattern. We discuss the relevance of this finding for other recovery patterns.
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影响因子:
3.2
作者:
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通讯作者:
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2.8
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