"I'm participating in lectures about linguistics" and "I participate in lectures about linguistics", without an adverb, both interchangeably mean the same thing in English
Technically maybe, but in real use, just about every native English speaker will understand the first to mean that I'm doing it right now and the second to mean that I do it habitually.
"An idealist is one who, on noticing that a rose smells better than a cabbage, concludes that it will also make better soup." - H.L. Mencken