Department of Psychiatry, Universidad de Navarra, Clínica Universidad de Navarra, Pamplona, Spain.
Schizophr Res. 2011 Feb;125(2-3):129-35. doi: 10.1016/j.schres.2010.10.003. Epub 2010 Nov 1.
With the double objective of searching for a physiological brain circuit concerned with time estimation and establishing whether this circuit is dysfunctional in schizophrenia patients, we carried out an activation likelihood estimate (ALE) meta-analysis of published functional neuroimaging studies. Our results reproduce the previous finding of a neurophysiological cortico-cerebellar-thalamic circuit related with time estimation in healthy individuals. In schizophrenia patients, the analysis indicates significantly lower activation of most right hemisphere regions of the circuit, suggesting that it may be subject to a pattern of disconnectivity. The ALE-meta-analysis approach is useful and further studies could elucidate how the timing circuit is connected with other cognitive tasks.
为了寻找一个与时间估计相关的生理大脑回路,并确定该回路是否在精神分裂症患者中出现功能障碍,我们进行了一项已发表的功能神经影像学研究的激活似然估计(ALE)荟萃分析。我们的结果再现了之前在健康个体中发现的与时间估计相关的神经生理皮质-小脑-丘脑回路的发现。在精神分裂症患者中,分析表明该回路的大多数右侧半球区域的激活显著降低,表明其可能存在断开连接的模式。ALE 荟萃分析方法是有用的,进一步的研究可以阐明定时回路与其他认知任务的连接方式。