APPLICABILITY OF BOLD FMRI AT 3T AND 7T VISION & PERCEPTION

这个子项目是利用资源的许多研究子项目之一。 由NIH/NCRR资助的中心拨款提供。对子项目的主要支持 子项目的首席调查员可能是由其他来源提供的， 包括美国国立卫生研究院的其他来源。为子项目列出的总成本可能 表示该子项目使用的中心基础设施的估计数量， 不是由NCRR赠款提供给次级项目或次级项目工作人员的直接资金。 我们正在使用一种视觉刺激范式，它在初级视觉皮质产生具有良好特征的局部性神经抑制，以测试在精细空间尺度上，积极的大胆反应是与神经输出更密切相关，还是与局部神经抑制更密切相关。在过去的一年里，我们发表了一篇论文，证明V1的大胆反应与局部神经抑制的幅度比与局部神经输出的相关性更好；第二篇手稿正在准备中。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. We are using a visual stimulus paradigm that produces well-characterized localized neural inhibition in primary visual cortex to test whether, on a fine spatial scale, the positive BOLD response is more closely related to the neural output or the local neural inhibition. In the past year we have published one paper demonstrating that the V1 BOLD response correlates better with the magnitude of the local neural inhibition than with the local neural output; a second manuscript is in preparation.