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Biomedical subjects

I G MacKenzie

Publications and source records attributed to I G MacKenzie.

6 recordsLinked to original sources
PubMed1981

Problems encountered in the early diagnosis and management of congenital dislocation of the hip.

This paper reports the results of screening 53033 infants for congenital dislocation of the hip between 1970 and 1979, and compares them with the results of a similar screening programme between 1960 to 1969. The number of dislocations missed at neonatal examination is unaltered at 0.11 per cent of live births. Operative treatment was needed in a further 0.07 per cent of the recent series even though the dislocations had been diagnosed within 24 hours of birth. The reasons for the failure of neonatal screening are discussed, and suggestions are made which will improve the situation.

Child, Preschool↗
PubMed1979

The measurement of receptive field properties of neurones in the visual cortex of the conscious, mobile cat.

We have assessed the accuracy, reliability and ease of use of a technique for determining the receptive field properties of cells in the visual cortex of the conscious, unrestrained cat. Our tests have provided the following results: (1) Minimal behavioural training is necessary; it is often possible to train an animal in only two sessions. (2) A surprising degree of optical stability can be achieved. Measurements of receptive field properties are consequently reliable and repeatable. (3) We are not certain of the exact limits of accuracy which can be achieved, but we usually determine orientation specificity +/- 5 degrees, and measure receptive field positions +/- 1.5 degrees.

Animals↗