The colour hexagon: a chromaticity diagram based on photoreceptor excitations as a generalized representation of colour opponency Lars Chittka OriginalPaper Pages: 533 - 543
Opponent colour coding is a universal strategy to evaluate the photoreceptor inputs in Hymenoptera Lars ChittkaWilly BeierRandolf Menzel OriginalPaper Pages: 545 - 563
The refractive development of the eye of the American kestrel (Falco sparverius): a new avian model M. E. AndisonJ. G. SivakD. M. Bird OriginalPaper Pages: 565 - 574
The neuroethology of sound production in tiger moths (Lepidoptera, Arctiidae) James H. Fullard OriginalPaper Pages: 575 - 588
Directionality of phase locking in auditory nerve fibers of the leopard frog Rana pipiens pipiens Barbara SchmilzThomas D. WhitePeter M. Narins OriginalPaper Pages: 589 - 604
Enhancement of sensitivity in photoreceptors of the honey bee drone by light and by Ca2+ Bernd Walz OriginalPaper Pages: 605 - 613
Effects of physiological cycles of infused melatonin on circadian rhythmicity in pigeons Christopher C. ChabotMichael Menaker OriginalPaper Pages: 615 - 622
Water detection in the desert sand scorpion, Paruroctonus mesaensis (Scorpionida, Vaejovidae) Douglas D. GaffinKira L. WennstromPhilip H. Brownell OriginalPaper Pages: 623 - 629
Peptidergic regulation of the Limulus midgut James R. GroomeMarianne de TschaschellWinsor H. Watson III OriginalPaper Pages: 631 - 643
The influence of tactile stimulation of nipples on the milk ejection reflex in the rat M. G. KaryakinN. P. Alekseev OriginalPaper Pages: 645 - 650
Electroantennogram of the American cockroach: effect of oxygen and an electrical model Sergej V. KapitskiiFelix G. Gribakin OriginalPaper Pages: 651 - 663