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Auditory–prefrontal axonal connectivity in the macaque cortex: Quantitative assessment of processing streams
van Opstal, A. John
Vakorin, Vasily A.
McIntosh, Anthony R.
Article from Journal - ilmiah internasional
Brain and Language (Full Text) vol. 135 (2014)
Parallel cortical pathways
Principal component analysis
Primate sensory systems subserve complex neurocomputational functions. Consequently, these systems are organised anatomically in a distributed fashion, commonly linking areas to form specialised processing streams. Each stream is related to a specific function, as evidenced from studies of the visual cortex, which features rather prominent segregation into spatial and non-spatial domains. It has been hypothesised that other sensory systems, including auditory, are organised in a similar way on the cortical level. Recent studies offer rich qualitative evidence for the dual stream hypothesis. Here we provide a new paradigm to quantitatively uncover these patterns in the auditory system, based on an analysis of multiple anatomical studies using multivariate techniques. As a test case, we also apply our assessment techniques to more ubiquitously-explored visual system. Importantly, the introduced framework opens the possibility for these techniques to be applied to other neural systems featuring a dichotomised organisation, such as language or music perception.
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