Full Idea
Multiple realization goes deeper and wider than biological species, and even in the same individual the neural realizer, or correlate, of a given mental state or function may change over time through maturation and brain injuries.
Gist of Idea
Multiple realisation applies to other species, and even one individual over time
Source
Jaegwon Kim (Mind in a Physical World [1998], §4 p.095)
Book Reference
Kim,Jaegwon: 'Mind in the Physical World' [MIT 2000], p.95
A Reaction
The tricky question here is what you mean by 'change'. How different must a pattern of neurons be before you say it is of a different type? How do you individuate a type?