a## Selection of ROIs
The selection of ROIs is based on previous research mainly by Rolls et al. (2023) - Cerebral Cortex about connectivity of auditory areas using the Glasser Altas Glasser et al. (2016) - Nature.
ROIs for the What-Stream
Since the what-stream mainly focusses on semantics and comprehension, it is the main speech processing pathway - as in the visual stream for object recognition.
There is a lot of research on it
Starting from the core and belt regions and moving anteriorly to the IFJ, we found following regions belonging certainly to the what-stream:
STGa (aSTG old description) is according to Ahveninen et al. (2006) - PNAS and the connectivity to TA2 from Glasser et al. (2016) - Nature certainly part of the what-stream. STGa has also connectivity to IFG. Also a bit of dorsal stream to IFG and fOP but weaker.
ROIs for the Where-Stream
The research on the auditory where-stream is a bit thin. Mainly I focussed on Rolls et al. (2023) - Cerebral Cortex for the connectivity between the areas.
Previous research shows that all STG subregions connect to the fOP via dorsal pathways, which could mean that STG generally belongs to the dorsal stream.
BUT
Table Overview
| Region (Glasser) | |
|---|---|
| core belt regions | |
| A1 | |
| MBelt | |
| LBelt | |
| 52 | |
| Where Stream |
see also
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Created: 2025-12-09 13:29