I had the same impression from those weak thought impulses.

He did not think the words, 'to speak' but the meaning of his thought impulse was clear.

There was no further trace of his thought impulses.

It seemed to him that he had picked up a familiar thought impulse.

However, try as he would to find the Master's thought impulses among the many that reached him, his efforts were in vain.

He made an effort to defend himself and to block the extraneous thought impulses.

They couldn't pick up the slightest trace of an alien thought impulse.

He began to organize certain incoming thought impulses which were now becoming stronger.

The Unseen don't even send out normal thought impulses so that they can be traced.

It was only a single thought impulse he had picked up out on the street.