Definition of oscillate | Bee Dictionary of English

v be undecided about something; waver between conflicting positions or courses of action
He oscillates between accepting the new position and retirement
v move or swing from side to side regularly

Because it causes its victims to oscillate between two extreme emotional states, it is also known to psychiatrists as bipolar affective disorder.
Sure enough, when two patterns compete for awareness in a binocular-rivalry display, the neurons representing the eye that is "winning" the competition oscillate in synchrony .
To make a credit-card transaction, say, a buyer presses his finger to the touch pad, triggering an imperceptible pulse of energy that makes the film oscillate.

Light transistor: Efficient transistor for light could lead to optical computers
Light can oscillate in different directions, as we can see in the 3-D cinema: Each lens of the glasses only allows light of a particular oscillation direction to pass through. However, changing the polarization direction of light without a large part of it being lost is difficult. Scientists have now managed this feat, using a type of light – terahertz radiation – that is of particular ...
July 8, 2013 - Science Daily
TU Vienna develops light transistor
( Vienna University of Technology ) Light waves can oscillate in different directions. Special materials can rotate the polarization of light -- but usually, this effect is very small. Scientists at the Vienna University of Technology have now managed to build a device that arbitrarily rotates a beam of light by tuning the electric potential applied to a thin layer of material. This produced an ...
July 8, 2013 - EurekAlert!

Vaclav Havel in Washington Post
Azerbaijan's and Russia's "human rights records oscillate from questionable to despicable," Havel wrote, but only Hungary was opposing them in their bid for two eastern European seats.
Tom Renney in Newsday
I had to make a decision, as opposed to oscillate. I do that occasionally,Renney said after practice Tuesday. "It's just a matter of what looks most comfortable. We have to allow guys to get relatively comfortable with that."
Bono in Contactmusic.com
Bono said, "Sadly I put on weight all the time. Oscillate is a word you could use. It's not particularly embarrassing because it's likely I would fit them again, whether they were a smaller size or a larger size."