How does visual perceptual learning interact with plastic changes and excitability in human visual cortex? (A01)

我们将通过以下方法来研究是否能找到知觉学习、兴奋性变化和可塑性从视觉系统到体感系统的跨模态转移的证据：(A)视觉剥夺结合体感知觉学习，(B)触觉学习期间视觉皮层的tDCS，反之亦然，(C)触觉和视觉方向辨别任务，(D) 3d环境下的视觉和触觉分类学习。我们还将研究行为应激是否能诱导与口服应激激素皮质醇(E)相同的知觉学习变化。

We shall investigate whether we can find evidence of crossmodal transfer of perceptual learning, excitability changes and plasticity, from the visual to the somatosensory system and vice versa using (A) visual deprivation combined with somatosensory perceptual learning, (B) tDCS over the visual cortex during tactile learning and vice versa, (C) a tactile and visual orientation discrimination task and (D) visual and haptic categorisation learning in a 3d environment. We shall also investigate whether behavioural stress can induce the same changes in perceptual learning as the oral administration of the stress hormone cortisol (E).