To avoid confusion, it might help to define some terms.
Grayout is a loss of peripheral and color vision. Blackout is total loss of vision. Both grayout and blackout are caused by decreased blood flow to the eyes resulting from G-forces. This does not affect the brain and there is no impairment in cognitive abilities or loss of consciousness. The pilot’s other faculties remain intact and the pilot can still talk, hear and fly the aircraft.
G-LOC (G-induced loss of consciousness) is loss of consciousness caused by G forces that decrease blood flow to the brain. G-LOC occurs with higher or more prolonged G forces than grayout and blackout, because the threshold for blood flow to the brain is slightly higher than for the eyes. During an episode of G-LOC the pilot is totally unaware and is unable to fly the plane. Consciousness usually recovers within 15-30 seconds as the pilot relaxes and the G’s come off. However, recovery of consciousness is always followed by a period of some incapacitation before the pilot fully recovers.
Depending on the degree and duration of the G forces, the transition into G-LOC is not always sudden. Another phenomenon that has been recognized is A-LOC (almost loss of consciousness). This refers to impaired consciousness induced by Gs but without total loss of consciousness. The pilot is aware but suffers some impaired cognitive abilities. If the G forces are relaxed the pilot recovers quickly. If not, the pilot can suffer G-LOC.
Although these effects are a continuum of G effects, they are different. Grayout and blackout are obviously modeled in AH. Modeling A-LOC and G-LOC is a lot more complicated, but some have suggested AH models some aspects of this.