Jockey Peter Toole has been woken from the medically induced coma he was placed in following a fall in the Maghull Novices' Chase on Saturday.
Toole, 22, suffered bleeding on the right side of his brain after 100-1 shot Classic Fly fell at Aintree.
"His CT scan came back negative, which is good news," said Lambourn-based trainer Charlie Mann.
"His body is OK and he woke up last night [Monday] from the induced coma and he was moving his legs."
Mann added: "They then put him back under in the night and he should be coming out of that again this morning.
"I've spoken to his father this morning and it is a case of so far, so good.
"Everything is as good as it can be at this stage. They'll do some tests on him when he has woken up."
Following the accident, the Irish jockey was taken to the nearby Fazakerley Hospital. He was later transferred to the neighbouring Walton Centre For Neurology and Neurosurgery.
Tony McCoy, who rode Don't Push It to third in Saturday's Grand National, was among those to send well wishes on Twitter.
"Don't push it ran great 2day v proud of him, but more importantly thoughts and prayers are with Peter Toole who has a serious head injury," McCoy tweeted.
In the aftermath of Toole's fall, Arthur Whiting, who trains Classic Fly, said: "I feel so bad about it. The horse seems fine, he came back and ate straight up."
Toole has ridden 30 winners this season, with his biggest success coming aboard the Mann-trained Fine Parchment in the Greatwood Gold Cup at Newbury in March.http://news.bbc.co.uk/sport1/hi/other_sports/horse_racing/9453139.stm