S exual dimorphisms in the nervous system have been well studied, although largely as
models for brain development, and not for their behavioral or evolutionary significance'. Most …

A deep male voice may play a role in courtship and competitive behaviours in humans by
attracting female mates and indicating body size to male competitors. The current …

We investigated relationships between circulating levels of salivary testosterone and the
fundamental and formant frequencies of male voices in a sample of forty healthy adult …

Historically, most studies of vertebrate central pattern generators (CPGs) have focused on
mechanisms for locomotion and respiration. Here, we highlight new results for ectothermic …

Danny was roaming the Fond Vert area of the village with two of his closest friends on a
rainy Saturday morning. They had eaten their fill of mangoes, after pelting a heavily laden …

Previous studies have suggested a causal relation between sex differences in behavior
such as singing and sex differences in the size of brain areas such as the forebrain song …

SYNOPSIS. Mate choice is a critically important determinant of reproductive success.
Because of its significance in the evolutionary process, it has received a great deal of …

Circulating hormone levels can mediate changes in the quality of courtship signals by males
and/or mate choice by females and may thus play an important role in the evolution of …

Vocal communication is a trait shared by most vertebrates. Non-mammalian model systems
have provided exquisite examples of how motor and sensory systems, respectively, produce …

This study used the source and filter theory approach to analyse sex differences in the
acoustic features of African elephant (Loxodonta africana) low-frequency rumbles produced …