Guest blog post from Dial & Martin on Dual Stream models -- More discussion

[Note: for backstory on this discussion, seehere]To indicate which comment each response corresponds to, we have copied the first line of the comment.In response to “I agree but we were vague on purpose 17 years ago because we simply didn’t know what the relation was between brain areas and acoustic/linguistic levels of representation” and “These are good points and I both appreciate DM’s frustration with our lack of clarity regarding the level of pro cessing we are talking about and laud their interest in being more precise”:We appreciate the clarification of your stance regarding speech-specificity (or linguistic-specificity) and agree that specificity of processing within a neuroanatomical region is not necessarily a prerequisite for identifying neuroanatomical levels of processing. This being said, we still feel it is important when discussing the neural basis of speech processing to be as specific as possible in the claims regarding the underlying cognitive model. We would, thus, stand by our claim that in a model of speech processing, there is necessarily an abstract, speech-specific sublexical processing level (see figure below). However, we agree that there is no convincing evidence that “linguistic levels of representation will map neatly onto individual brain regions” and that there may not be a region that is “linguistic or level specific,” at least to the extent that current technology allows for the investigation of such questions (i.e., at th...
Source: Talking Brains - Category: Neuroscience Authors: Source Type: blogs