Sounds provide us with useful information about our environment which complements that provided by other senses, but also poses specific processing problems. How does the auditory system distentangle sounds from different sound sources? And what is it that allows intermittent sound events from the same source to be associated with each other? Here we review findings from a wide range of studies...

Congenital absence of a main pulmonary artery to one lung is a well-documented anomaly (Fraentzel, 1868; Miller, 1937; Blalock, 1948; Findlay and Maier, 1951; Madoff, Gaensler, and Strieder, 1952) and its association with unilateral cystic lung disease was emphasized in particular by Mannix and Haight (1955) and by Steinberg (1958). According to Madoff and others, a preponderance of congenital ...

T HE RESULTS presented in the first paper of this series confirm the observations of others that acute hypoxia frequently raises the pulmonary arterial pressure in normal man. This pressor effect cannot be solely attributed to an augmented cardiac output, nor can it be ascribed to an elevated left atrial pressure. It seems, therefore, to arise from a change in the dimensions of some portion or ...

The preparation of an extract from animal tissues containing an enzyme specific for the hydrolysis of &glucuronides was first described by Masamune (1). Oshima (2,3) later studied the distribution of this enzyme in the tissues of the dog and the ox and improved the method of preparation of active extracts. At the suggestion of Professor G. F. Marrian an investigation was undertaken to determine...

This study investigated the Family Language Policy of second- and third-generation Turkish parents in Melbourne, Australia. Earlier research has shown that family home is a crucial site for language maintenance [Fishman 1991. Reversing Shift: Theoretical Empirical Foundations Assistance to Threatened Languages. Clevedon: Multilingual Matters]. The family, home, remains most migrant groups their...

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The pale, cupped disc found in the final stages of glaucomatous disease has been known from the time of Von Graefe (I854). Since then many observers have described changes that occur at the optic disc in chronic, simple glaucoma. There has been particular interest in changes which may occur in the early stages of the disease. Studies of the normal population have shown that while there is a wid...