So how will you be feeling on Friday morning?

Will you wake up thinking you've won the equivalent of the World Cup, the Grand National and the Booker Prize all at once? Or will you be descending into a deep pit of despair as all your hopes and dreams are dashed to pieces on the referendum rocks?

The psychological impact of the referendum has not, as yet, been a major talking point in this debate but at some point on Friday morning many people are going to realise that all the energy and hope they've invested in one side or other has been for nought. And some people will find that hard to deal with.

The process, health psychologist Dr Cynthia McVey explains, is slightly analogous to grief. "First of all there will be disbelief. There will be people waking up and saying 'what?'. Once you accept what's happened then you can become really angry and then maybe you will get a bit of depression."

As for which side in the debate would feel that loss more deeply, McVey wonders if it may be the No side if the vote goes against them. And not just because they've had the country taken away from them. "I do think if the No side loses No voters might feel the No campaign didn't represent them very well in comparison to the Yes campaign, which seems to have been well planned and enthusiastic."

A defeat for Yes would at least have the consolation that the campaign was a good one. "They might say 'well, we've done the best we can'."

That said, some Yes voters may feel aggrieved at No voters if they fall short. "They might think the Nos don't care as much whereas the Nos care deeply."

The question is if you are on the losing side how do you cope with it? McVey suggests there are two possible approaches. "There's a problem-focused method and an emotion-focused way. With a problem-focused response what you do is try and see if you can solve the problem using practical measures. That might mean getting involved with the political process."

Alternatively, the emotion-focused approach is all about making yourself feel better. That could mean going to the gym or having a drink. Whatever happens with the vote there's one thing McVey can guarantee: "There will be some sore heads and hangovers."