Handbook of Psychobiology presents an integrative overview of psychobiology and covers topics ranging from pathways in the central nervous system to principles of neuronal development; chemical pathways in the brain; the role of neurotransmitters in the regulation of behavior; and the biological basis of memory. Vertebrate sensory and motor systems are also discussed, along with the psychobiology of attention and neurological aspects of learning. This handbook consists of 21 chapters divided into four sections and opens with an introduction to neural mechanisms underlying the behavior of invertebrates, followed by a comparison of the visual behavior of humans and arthropods. The next sections explore the chemistry of behavior, the sensory and motor systems of vertebrates, and integration and regulation in the brain. Visual perception and visual coding, central auditory processing, and auditory localization are considered, together with motor coordination, neurophysiological aspects of dreaming, cognition, and language. The final chapter is devoted to some of the philosophical issues surrounding perception. This monograph will be of value to psychologists, biologists, physiologists, and others in fields ranging from biochemistry and linguistics to invertebrate neurophysiology and perceptual phenomenology.