Some particular thought must be given to how to protect from neutron exposure, however.

That particular thought caught like a thorn in her throat.

Then he realized just how silly that particular thought was.

He didn't care to follow the trail of those particular thoughts.

That particular thought, therefore, slipped easily out of his consciousness and into words.

Min was wise enough to keep that particular thought to herself.

He'll still be my husband and I just can't bear that particular thought.

But that particular thought spoken aloud would be more trouble than it was worth.

Obsession: This is when people cannot help themselves from thinking a particular thought.

I do not think that particular thought is needed in order to adopt this perception.