Halliday was born on 19 August 1926 in Liverpool to William Reginald Halliday and Edith Hilda (née Macneile Dixon). ️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️ 1950<unk>he did his national service where he worked for the British Army physiological section. Halliday worked on finger tremor physiology, which seemed to be linked to sleepiness. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️
<unk> <unk> Arnold Carmichael, the director of the neurophysiology unit of the National Hospital, noted it as such. Carmichael persuaded Halliday to come work at the National when he finished his national service in 1953.<unk> ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️