Over 2,600 monkeys in Britain are victims of `horrifying experiments` including sawing open their skulls while still alive, inserting electrodes in them and forcing them to watch TV, states report.
According to the British Union for the Abolition of Vivisection (BUAV), scientists at a university in Edinburgh last year force-fed pregnant marmosets with toxic chemicals used in plastics to monitor the effect on the sexual organs of their unborn babies.
At another university, two anaesthetised monkeys had their skulls sawn open and electrodes were inserted into their brains.
Their eyes were then kept open and focused on a TV screen for five days to test whether the "after image" is in the eye or the brain, the Daily Express reported Sunday.
Most experiments were done in the name of medical science, but animal rights activists claim many of the reasons were "completely frivolous".