Adrian Michael Berg told jurors in the Supreme Court that his heavy drug abuse had affected his memory.

‘‘It was all a big blur to me,’’ he said when Crown prosecutor Peter Sherriff asked him about May 2014.

Mr Sherriff read what the Crown says was Mr Berg’s statement to police, made in Launceston on May 29, 2014, and Mr Berg continually denied having any recollection of the events.

The document alleged that the accused Nathan Scott Davidson was physically responsible for most of the acts.

The trial of Mr Davidson, 40, and co-accused Gene Boyer Jaehne, 28, began in Launceston on Wednesday.

The pair have pleaded not guilty to joint allegations of Criminal Code assault and aggravated assault upon Mr Berg which arose in a shed at Mr Davidson’s St Leonards property.

In his opening address, Mr Sherriff said the incident occurred between 2.30pm and 6pm on May 28, 2014.

He said Mr Berg subsequently turned up at a St Leonards resident’s house ‘‘in a distressed state’’ and asked to use the phone.

Mr Sherriff said the resident waited with Mr Berg for police officers to arrive and Mr Berg received treatment for his injuries in the Launceston General Hospital for about an hour.

Defence counsel Fran McCracken, for Mr Davidson, told jurors that ‘‘the sticking point’’ was what occurred in the shed, while Mr Jaehne’s defence counsel Emily Judd disputed that any form of assault took place.

Mr Davidson and Mr Jaehne have been accused of assaulting Mr Berg by grabbing hold of him, pushing him to the floor, dragging him along the floor, punching him to the head, kicking him to the body, striking him to the body with a wooden stick, trying to discharge a stun gun on his arm and depriving him of his liberty.

The aggravated assault charge alleges that the men also pointed a pen gun towards Mr Berg’s face, saying, ‘‘I’m going to shoot you now,’’ and pointed it at his feet.

The trial, before Justice Robert Pearce, continues.