Saturday, May 12, 2018

The Yin-Yang Brain Revisited: Stephen Grossberg's Work

A Funny Thing Happened this Morning

In December of last year, I wrote a two-part article on how I came to understand the Yin-Yang organization of the brain. I have known for a long time that the Yin-Yang principle was the basis of reality and I came to understand that complementarity was absolutely essential to the organization of the brain. Thanks to my research in deciphering the meaning of certain occult texts, I discovered that each hemisphere of the brain consists of two separate but complementary hierarchies. These are symbolized by two olive trees.

I had assumed (wrongly, as it turned out) that I was the only person to have arrived at this understanding. This morning, one of my readers (Spent Death) left a comment on my blog to recommend the work of cognitive neuroscientist Stephen Grossberg. After a quick search on Google, I was blown away by what I found. In 2000, Grossberg published a paper titled, THE COMPLEMENTARY BRAIN Unifying Brain Dynamics and Modularity (pdf) in which he describes a revolutionary model of the brain based on complementarity. This post is not intended to be a review or a critique of Grossberg's work. I merely wish to point out the commonality between his views and mine. Here is what he wrote in the paper's abstract (emphasis added):
How are our brains functionally organized to achieve adaptive behavior in a changing world? This article presents one alternative to the computer metaphor suggesting that brains are organized into independent modules. Evidence is reviewed that brains are organized into parallel processing streams with complementary properties. Hierarchical interactions within each stream and parallel interactions between streams create coherent behavioral representations that overcome the complementary deficiencies of each stream and support unitary conscious experiences. This perspective suggests how brain design reflects the organization of the physical world with which brains interact. Examples from perception, learning, cognition, and action are described, and theoretical concepts and mechanisms by which complementarity is accomplished are presented.
In the same paper, Grossberg offers a hypothesis to explain how the brain handles sensory uncertainty using parallel streams and multiple stages or levels in the hierarchy. I propose a somewhat similar solution which also uses multiple levels and parallel streams but is implemented via feedback pathways in the cortex and the thalamus. If you have any interest in how the brain works, I heartily recommend that you read Grossberg's work on complementarity.

Needless to say, nobody in mainstream AI is thinking along these lines even though some of them claim to base their research on neuroscience. They are lost in a lost world. AGI will not come from the mainstream.

See Also:

Solving the Mysteries of Reciprocal Corticothalamic Feedback and Cortical Learning
Fast Cortical Learning Using Spike Timing
The Two Olive Trees and the Yin-Yang Brain: How My Understanding of the Cortex Evolved Over the Years

1 comment:

Spent Death said...
This comment has been removed by the author.