{"title":"Bernhard Rensch","description":null,"products":[{"product_id":"probleme-der-gedachtnisspuren-was-kann-der-biologe-noch-von-der-elektronenmikros-book-bernhard-rensch-9783531082110","title":"Probleme der Gedächtnisspuren. Was kann der Biologe noch von der Elektronenmikroskopie erwarten?","description":"1. Our understanding of the localization, formation, and arousal of memory traces, of the process of abstraction and generalization and of the psychophysical relations of all these processes is still very unsatisfactory in spite of thousands of relevant investigations. The author comments several findings of different researchers, gives a summary of his and his coworkers' relevant investigations and discusses briefly some possible hypothetical conceptions. 2. Up to now the extension of nervous structures which are involved in the formation of engrams is not sufficiently known. It is also not clear whether or not brain regions of sensations and regions of corresponding mental images are identical (Fig. 1). During learning processes excitations in relatively extensive brain regions occur (Fig. 2). In mammals the brainstem and the midbrain and especially the hippocampus formation can be involved. These statements strengthen the opinion that the formation of a simple memory trace takes place in a network which comprises very many neurones.","brand":"WoB","offers":[{"title":"- \/ - \/ INTERNAL","offer_id":52428778340625,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true},{"title":"GB \/ NEW \/ INGRAM","offer_id":52428779127057,"sku":"NLS9783531082110","price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9783531082110.jpg?v=1759165159"},{"product_id":"homo-sapiens-book-bernhard-rensch-9780367278724","title":"Homo Sapiens","description":"Originally published in 1972, Homo Sapiens is an account of the uniqueness of man in the animal kingdom, how this uniqueness arose during evolution, and what traces of it can be detected in animals other than man.","brand":"WoB","offers":[{"title":"GB \/ NEW \/ INGRAM","offer_id":52531326517521,"sku":"NLS9780367278724","price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9780367278724.jpg?v=1760655831"},{"product_id":"gedachtnis-abstraktion-und-generalisation-bei-tieren-book-bernhard-rensch-9783663010500","title":"Gedächtnis, Abstraktion und Generalisation bei Tieren","description":"The problem of memory and capability of abstraction and generalisation is discussed with special reference to investigations performed in the Zoologi- cal Institute of Munster during the last 15 years. The main statements are the following ones. When related species or races of the same species of different body size are compared the capacity 0\/ learning and duration 0\/ memory is positively correlated with absolute brain size. In some cases the absolute size of the brain seems to be more important than its special structure and the phylo- geneticallevel of the animals. The maximum of similar optical tasks mastered at the same time was: Octopus 3, trouts 6, Iguana 5, a giant race of domestic fowl 7, Indian elephant and horse 20. Normally, memory lasts a very long 1 time. A horse retained 19 of 20 optical tasks 1 \/2 year, a carp one task more 1 than 20 \/2 months. The capability of abstracting also depends upon the absolute brain size. Examples are given for the capability of abstracting with regard to sensa- tions of touch (experiments with a racoon) and to hearing (experiments with jackdaws and parakeets).","brand":"WoB","offers":[{"title":"- \/ - \/ INTERNAL","offer_id":52660712866065,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true},{"title":"GB \/ NEW \/ INGRAM","offer_id":52660714045713,"sku":"NLS9783663010500","price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9783663010500.jpg?v=1762265843"},{"product_id":"die-stammesgeschichtliche-sonderstellung-des-menschen-book-bernhard-rensch-9783663003243","title":"Die stammesgeschichtliche Sonderstellung des Menschen","description":null,"brand":"WoB","offers":[{"title":"- \/ - \/ INTERNAL","offer_id":52660814610705,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true},{"title":"GB \/ NEW \/ INGRAM","offer_id":52660815528209,"sku":"NLS9783663003243","price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9783663003243.jpg?v=1762266061"},{"product_id":"elektrophysiologische-untersuchungen-zur-analysierung-der-bildung-von-assoziatio-book-bernhard-rensch-9783663200291","title":"Elektrophysiologische Untersuchungen zur Analysierung der Bildung von Assoziationen und Gedächtnisspuren in Gehirn und Rückenmark. Akute und chronische Giftwirkungen sauerstoffhaltiger Lösungsmittel","description":null,"brand":"WoB","offers":[{"title":"GB \/ NEW \/ INGRAM","offer_id":52661988294929,"sku":"NLS9783663200291","price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9783663200291.jpg?v=1762268464"}],"url":"https:\/\/www.worldofbooks.com\/collections\/author-books-by-bernhard-rensch.oembed","provider":"World of Books ","version":"1.0","type":"link"}