Our brains are exceptionally good at extracting important information from the sea of unfamiliar complex sounds around us. However, we are only beginning to how the brain restructures itself to accomplish this learning, and how particular stages of learning may be supported by different neurobiological mechanisms. This PhD project tackles these issues by combining intensive, computationally-informed auditory training paradigms with functional and structural MRI at high field strengths. The project will test hypotheses about the emergence and consolidation of new auditory representations, as well as the relationship of learning success to transient or sustained changes in brain microstructure.
Carey, D., Caprini, F., Allen, M., Lutti, A., Weiskopf, N., Rees, G.,Callaghan, M, & Dick, F. (2018). Quantitative MRI provides markers of intra-, inter-regional, and age-related differences in young adult cortical microstructure. NeuroImage, 182, 429–440. http://doi.org/10.1016/j.neuroimage.2017.11.066
Carey, D., Rosen, S., Krishnan, S., Pearce, M. T., Shepherd, A., Aydelott, J., & Dick, F. (2015). Generality and specificity in the effects of musical expertise on perception and cognition. Cognition, 137, 81–105. http://doi.org/10.1016/j.cognition.2014.12.005
Dick, F. K., Lehet, M. I., Callaghan, M. F., Keller, T. A., Sereno, M. I., & Holt, L. L. (2017). Extensive Tonotopic Mapping across Auditory Cortex Is Recapitulated by Spectrally Directed Attention and Systematically Related to Cortical Myeloarchitecture. Journal of Neuroscience, 37(50), 12187–12201. http://doi.org/10.1523/JNEUROSCI.1436-17.2017
Holt, L. L., Tierney, A. T., Guerra, G., Laffere, A., & Dick, F. (2018). Dimension-selective attention as a possible driver of dynamic, context-dependent re-weighting in speech processing. Hearing Research, 366, 50–64. http://doi.org/10.1016/j.heares.2018.06.014
Callaghan, M. F., Helms, G., Lutti, A., Mohammadi, S., & Weiskopf, N. (2014). A general linear relaxometry model of R1 using imaging data. Magnetic Resonance in Medicine, 73(3), 1309–1314. http://doi.org/10.1002/mrm.25210