"It began as a primal reaction."

She'd had a primal reaction to it then that she'd managed to cover with anger, but the effects still lingered.

Feeding each other is a primal reaction to grief, an essential instinct to nourish the living.

The influence of affect on human behavior ranges from primal, instinctual reaction and arousal to post-cognitive consideration of one's own mortality and mood.

It's a visceral, primal reaction.

But fear is a primal reaction, an old, ungovernable urge, and even as my conscious mind tells me there's nothing the matter, my right leg starts twitching uncontrollably, a phenomenon climbers call sewing-machine leg.

More than guilt, though, more than the need to comfort and protect, he was aware of a fierce thundering in his blood, a primal reaction of male to female.

Now, with the anti-lock systems, they remain in control, so their primal reaction - jerking the wheel - has consequences.

In 1990, Jarvis helped to further chase these concepts with the also-classic Smash TV, but that game doesn't elicit the same kind of primal reaction Robotron enjoyed.

He'd never experienced such a primal reaction from a wench, had never seen a woman filled with such passion as his Janet.