Mirror, mirror on the wall…What is an anti-memory?

In Brain Circuitry, Memory and Learning by Brainy Days Ahead

When we learn something, connections are made between excitatory neurons, allowing us to form new memories. But that disturbs the excitatory/inhibitory balance in the brain and arouses inhibitory connections in the form of anti-memories. But these anti-memories don’t erase the new memory. Instead they help stabilize the new memories in order to allow long-term storage.