What is an anchor collapse, neurologically?

In a mailing list I follow, a member claimed we "do not know what collapsing anchors is, neurologically or in the energy model."

"Collapsing anchors" is the NLP term for mixing two different conditioned responses

Neurologically, I think we (as in science) really know
what this means. An anchor is a pattern recognizer triggering an effect. In its simplest form, it is a single neuron in a neural network. In practice, there will be a bunch of related neurons triggering on similar patterns, and a feedback loop between them.

The pattern recognizers are connected 'forward' (to
experience) and 'backwards' (to create
hormone/neurotransmitter/etc release, and affect various
filters). 'Experience' include a feedback loop, since
we experience the neurotransmitters and hormones.

In neural networks, neurons that fire together wire together (actually, that's a trifle simplified, there's sometimes time delays and repetition required. Three simultaneous triggers over a ten minute period seems to do the trick, at a cellular level.)

When you 'collapse anchor', you fire two different set
of neurons at the same time, to make them grow
together . You use an association to get at each of
them, and tie the 'front' of one to the 'back' of the
other.

This works if the "back" tie of one anchor is stronger than the other (ie, there are more or stronger neurological pathways.)

I'll do more details if somebody is interested.