Contents: Preface. Letter from Chancellor Kenneth A. Shaw. R.T. Verrillo, Tribute. Introduction. R.P. Hellman, Can Magnitude Scaling Reveal the Growth of Loudness in Cochlear Impairment? W.B. Adams, Control of Rhythmic Firing in Aplysia Neuron R15: A Calcium Riddle. R.L. Smith, Adaptation and Dynamic Responses in the Auditory Periphery. R.B. Barlow, E. Kaplan, Intensity Coding and Circadian Rhythms in the Limulus Lateral Eye. M.W. Cannon, The Influence of Long-Range Spatial Interactions on Human Contrast Perception. R.A. Schmiedt, Cochlear Potentials in Quiet-Aged Gerbils: Does the Aging Cochlea Need a Jump Start? S.C. Chamberlain, E.P. Hornstein, Photoreceptors, Black Smokers, and Seasonal Affective Disorder: Evidence for Photostasis. S.J. Bolanowski, C.M. Checkosky, T.M. Wengenack, And Now, for Our Two Senses. R. Batra, Interaural Temporal Coding of Complex High-Frequency Sounds: A Transformation in the Inferior Colliculus? R.D. Frisina, J.P. Walton, K.J. Karcich, Differential Abilities to Extract Sound-Envelope Information by Auditory Nerve and Cochlear Nucleus Neurons. C.L. Van Doren, L.L. Menia, Representing the Surface Texture of Grooved Plates Using Single-Channel, Electrocutaneous Stimulation. H. Fastl, Loudness Evaluation by Subjects and by a Loudness Meter. G.A. Gescheider, What Is Absolute About Absolute Magnitude Estimation? J.E. Savage, N.B. Slepecky, Involvement of Different Isoforms of Actin in Outer Hair-Cell Motility. G.A. Engbretson, E.C. Solessio, Physiology and Functional Implications of a Unique Vertebrate Visual System. K.M. Hiiemae, Process and Mechanism: Mechanoreceptors in the Mouth as the Primary Modulators of Rhythmic Behavior in Feeding? R.T. Verrillo, The Effects of Aging on the Sense of Touch. B. Scharf, J. Nadol, J. Magnan, A. Chays, A. Marchioni, Does Efferent Input Improve the Detection of Tones in Monaural Noise?