Sensitivity changes, beginning at the first stages of visual transduction, permit neurons with modest dynamic range to respond to contrast variations across an enormous range of mean illumination. We have used functional magnetic resonance imaging (fMRI) to investigate how these sensitivity changes are controlled within the visual pathways. We measured responses in human visual area V1 to a con...

Low test scores are routinely observed in sub-Saharan African populations. In this paper, we explore the topic further by examining Rushton and Skuy’s [Intelligence 28 (2000) 251] hypothesis that a bimodal distribution exists in the African population with a high-scoring group virtually indistinguishable from Whites, and a low-scoring group performing significantly below both Whites and the hig...

Before the 1939-1945 war and for some years afterwards Dr Carmichael ran a very successful small discussion group called the Neurological Club. Members were widely recruited and there was a contingent from Cambridge which included Rushton, Hodgkin and Huxley. Rushton was my director of studies as an undergraduate at Cambridge, and I suspect it was because he knew Carmichael through the Neurolog...

Indonesia has been hit by outbreak of foot and mouth disease (FMD) after more than 30 years being free FMD. This study aimed to determine the level transmission FMD virus potential economic losses due outbreak. The method used in this research was a case which data for analysis secondary data. analytical reproduction number (R0) impact using Rushton Knight formula. results showed that rate R0 =...

Clive Hood, a technician in the Physiological Laboratory, Cambridge, was interviewed in April 1995 by Dr E. M. Tansey and Dr Ann Silver, the interview being transcribed and edited by Tansey. Starting his career with the first Lord Adrian FRS, Clive also worked with Professor William Rushton FRS and Professor Fergus Campbell FRS. This is an edited extract of that interview, the recording of whic...