Vertebrate Memory

activity, relevant both to animals and to man. This part of our study was summarized in 1947 in the book, On the Basic Forms of Neural and Psycho neural Activity. Then, in the 1940's and 1950's, we carried out a multifaceted study of spatial orientation in the environment, one of the higher forms of psychic activity of vertebrates and man. In the study of spatial orientation, which is based entirely on psychic memory, we come even closer to the study of the latter. The roles of visual, auditory, vestibular, olfactory, and proprio ceptive receptors, and the dependence of memory on them for orientation in space were investigated, along with the roles of different regions of the cortex and other parts of the brain in these manifestations of memory. The results of this investigation were summarized in 1959 in the book, On Neural Mechanisms of Spatial Orientation in Higher Vertebrates. In the last ten years we have set ourselves the goal of a multifaceted study of the origin of image memory in different representatives of the vertebrate series, from fish to monkeys inclusively.

Preliminary Information on Memory.- Methods of Study of Memory.- Characteristics of Image Memory in Higher Vertebrates.- Origin of Short-term Image Memory.- Cortical Substrates of Image Memory.- Origin of Long-term Image Memory.- The Role of Subcortical Structures in the Origin of Image Memory.- Characteristics and Origin of Emotional Memory.- Characteristics and Origin of Long-term Conditioned-Reflex Memory.- Memory in Man.- Phylogenetic Development of Memory.- Postembryonic Development of Memory.- Summary and Conclusions.- References.