Simulating lesion-dependent functional recovery mechanisms
Simulating lesion-dependent functional recovery mechanisms
复制标题
模拟病变依赖性功能恢复机制
DOI:
10.1101/2021.01.20.427450
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Sajid N
中科院分区:
文献类型:
--
作者:
Sajid N
Functional recovery after brain damage varies widely and depends on many factors, including lesion site and extent. When a neuronal system is damaged, recovery may occur by engaging residual (e.g., perilesional) components. When damage is extensive, recovery depends on the availability of other intact neural structures that can reproduce the same functional output (i.e., degeneracy). A system’s response to damage may occur rapidly, require learning or both. Here, we simulate functional recovery from four different types of lesions, using a generative model of word repetition that comprised a default premorbid system and a less used alternative system. The synthetic lesions (i) completely disengaged the premorbid system, leaving the alternative system intact, (ii) partially damaged both premorbid and alternative systems, and (iii) limited the experience-dependent plasticity of both. The results, across 1000 trials, demonstrate that (i) a complete disconnection of the premorbid system naturally invoked the engagement of the other, (ii) incomplete damage to both systems had a much more devastating long-term effect on model performance and (iii) the effect of reducing learning capacity within each system. These findings contribute to formal frameworks for interpreting the effect of different types of lesions.
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DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
H. Nelson
通讯作者:
H. Nelson
影响因子:
3.4
作者:
P. Schwartenbeck;Karl J. Friston
通讯作者:
Karl J. Friston
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
T. Karjalainen
通讯作者:
T. Karjalainen
影响因子:
11.2
作者:
CONNOLLY, AM;DODSON, WE;RUST, RS
通讯作者:
RUST, RS
DOI:
10.1523/jneurosci.4255-12.2013
发表时间:
2013-05-08
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Moran RJ;Campo P;Symmonds M;Stephan KE;Dolan RJ;Friston KJ
通讯作者:
Friston KJ