Towards a Unified View on Pathways and Functions of Neural Recurrent Processing.

Towards a Unified View on Pathways and Functions of Neural Recurrent Processing. Trends Neurosci. 2019 Aug 06;: Authors: Pennartz CMA, Dora S, Muckli L, Lorteije JAM Abstract There are three neural feedback pathways to the primary visual cortex (V1): corticocortical, pulvinocortical, and cholinergic. What are the respective functions of these three projections? Possible functions range from contextual modulation of stimulus processing and feedback of high-level information to predictive processing (PP). How are these functions subserved by different pathways and can they be integrated into an overarching theoretical framework? We propose that corticocortical and pulvinocortical connections are involved in all three functions, whereas the role of cholinergic projections is limited by their slow response to stimuli. PP provides a broad explanatory framework under which stimulus-context modulation and high-level processing are subsumed, involving multiple feedback pathways that provide mechanisms for inferring and interpreting what sensory inputs are about. PMID: 31399289 [PubMed - as supplied by publisher]
Source: Trends in Neurosciences - Category: Neuroscience Authors: Tags: Trends Neurosci Source Type: research