Mr Brown smashed his head off the road and suffered serious head injuries including a fractured skull and bleeding on the brain.
Cowardly Hedley then left the 34-year-old cyclist lying unconscious in the middle of the road before getting back into his car and driving off.
Hedley, from Kirkcaldy, Fife, subsequently found out police had put out an appeal to find the motorist involved and he handed himself into a local station two days later.
Hedley pleaded guilty to assaulting Mr Brown to his severe injury, permanent impairment and to the danger of his life when he appeared at Edinburgh Sheriff Court on Tuesday, September 22.
Source: https://www.edinburghlive.co.uk/news/edinburgh-news/man-grabbed-edinburgh-cyclist-neck-34655622