Definition of "neurofactor"

The remorse neurofactor (Factor 26) flooded the sites in Gary’s brain specially tailored by evolution to respond to it.

2001, Jonathan Franzen, The Corrections

McNamara et al. (1991) suggested that neurofactors located within the thoracic ganglion may alter the apparent ionic permeabilities of this freshwater prawn.

2008, Michael Bernard New, Wagner Cotroni Valenti, Freshwater Prawn Culture, page 33