Physiological Reviews: “A proper dialogue between spermatozoa and the egg is essential for conception of a new individual in sexually reproducing animals. Ca(2+) is crucial in …

There is a substantial literature on the distinction between conception and perception (see, e.g., Smith 2002 and Dretske 2000, and the references therein). My goal, in this work, is simply to …

Everyone is aware that he can conceive a thousand things about which he believes nothing at all—things such as a horse with wings, a mountain of gold—but although conception can …

This paper has as its general focus the examination of certain choices that Galen made in his conception theory relative to (1) the nature of the male and female reproductive fluids; (2) the …

My hope is that these reflections around human conception will have touched some readers and inspired a few to do some research on the nature of conception from a psychological perspective.

What is the menstrual cycle and ovulation? Figure from Before We Are Born; Essentials of Embryology and Birth Defects, 5th Edition, by Moore, Keith L. and Persaud, T.V.N. ©1998. …

The union of sperm and egg forms a zygote, a unicellular human embryo. Preserving the customary, embryologically correct terminology, we refer to this event as fertilization or …