Context effects on processing widely deviant sounds in newborn infants.

Detecting and orienting toward sounds carrying new information is a crucial feature of the human brain that supports adaptation to the environment. Rare, acoustically widely deviant sounds presented amongst frequent tones elicit large event-related brain potentials (ERPs) in neonates. Here we tested whether these discriminative ERP responses reflect only the activation of fresh afferent neuronal populations (i.

Segregation of chromosomes in spermatozoa of four Hungarian translocation carriers.

Objective: To determine the segregation pattern of the translocated chromosomes in spermatozoa of human males with translocations.

Design: Retrospective case-control study.

Setting: Hospital-based genetic laboratory for reproductive biology.