Two-choice discrimination with alternating trial types

A new field trial with two types of live measles vaccine in rural regions of Iran

Response strategy in two-choice visual discrimination in the rabbit.

Rabbits were trained to discriminate striated patterns of different orientation in a two-choice discrimination box. After the 90% correct level had been reached, motor behaviour was studied during visual discrimination. It was found that the animals made their decision after seeing one of the two stimuli. This finding is in disagreement with an earlier study from which it was concluded that the...

Innovative Methodology Choice ball: a response interface for two-choice psychometric discrimination in head-fixed mice

Sanders JI, Kepecs A. Choice ball: a response interface for twochoice psychometric discrimination in head-fixed mice. J Neurophysiol 108: 3416–3423, 2012. First published September 26, 2012; doi:10.1152/jn.00669.2012.—The mouse is an important model system for investigating the neural circuits mediating behavior. Because of advances in imaging and optogenetic methods, head-fixed mouse preparati...

Choice ball: a response interface for two-choice psychometric discrimination in head-fixed mice.

The mouse is an important model system for investigating the neural circuits mediating behavior. Because of advances in imaging and optogenetic methods, head-fixed mouse preparations provide an unparalleled opportunity to observe and control neural circuits. To investigate how neural circuits produce behavior, these methods need to be paired with equally well-controlled and monitored behavioral...

URACHAL DIVERTICULUM WITH ALTERNATING SINUS

Urachal anomalies are exceptionally rare. They can present in different ways in childhood as well as in adults. We present an interesting case of vesico-urachal diverticulum with alternating sinus. The interesting finding in this patient was the inversion and disappearance of the umbilicus at the termination of voiding