One’s tense will vary depending on what one is trying to convey within their paper or section of their paper. For example, the tense may change between the methods section and the discussion section.

Making sure that the verb is in the same tense all the way through a document or a letter or an email. If you read it to yourself afterwards you'd realise that it was in the wrong tense because we ...

An international team of researchers, including scientists from the HSE Centre for Language and Brain, has identified the causes of impairments in expressing grammatical tense in people with aphasia.