Summary
In the tectum opticum ofHydromantes italicus neurons were recorded extracellularly which responded selectively to moving visual stimuli. Part of the recorded cells were marked iontophoretically by means of alcian-blue dye for anatomical localization. Out of a total of 110 neurons six groups could be distinguished which preferred the square stimulus but differred strongly in their responses to rectangles oriented either vertically or horizontally. Two of these groups showed stimulus preference inversion if the stimulus velocity was changed. These response patterns displayed characteristic differences with those known in other amphibia, well corresponding to differences in the prey catching behaviours.
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References
Ewert J-P (1976) The visual system of the toad. Behavioural and physiological studies on a pattern recognition system. In: Fite KV (ed) The amphibian visual system. Academic Press, New York San Francisco London, pp 141–202
Ewert J-P, Wietersheim A von (1974) Musterauswertung durch Tectum- und Thalamus/Praetectum-Neurone im visuellen System der KröteBufo bufo (L.). J Comp Physiol 92: 131–148
Grüsser O-J, Grüsser-Cornehls U (1976) Neurophysiology of the anuran visual system. In: Llinás R, Precht W (eds) Frog neurobiology. Springer, Berlin Heidelberg New York, pp 297–385
Grüsser-Cornehls U, Himstedt W (1973) Responses of retinal and tectal neurons of the salamander (Salamandra salamandra L.) to moving visual stimuli. Brain Behav Evol 7: 145–168
Grüsser-Cornehls U, Himstedt W (1976) The urodele visual system. In: Fite KV (ed) The amphibian visual system. Academic Press, New York San Francisco London, pp 203–266
Henn V, Grüsser O-J (1968) The summation of excitation in the receptive field of movement sensitive neurons in the frog's retina. Vision Res 9: 57–69
Himstedt W (1967) Experimentelle Analyse der optischen Sinnesleistungen im Beutefangverhalten der einheimischen Urodelen. Zool Jahrb Abt Allg Zool Physiol 73: 281–320
Himstedt W, Roth G (1980) Neuronal responses in the tectum opticum ofSalamandra to visual prey stimuli. J Comp Physiol 135: 251–257
Luthardt G, Roth G (1979) The relationship between stimulus orientation and stimulus movement pattern in the preycatching behavior ofSalamandra salamandra. Copeia 1979: 442–447
Roth G (1976) Experimental analysis of prey catching behavior ofHydromantes italicus Dunn (Amphibia, Plethodontidae). J Comp Physiol 109: 47–58
Roth G (1978) The role of stimulus movement patterns in the prey catching behavior ofHydromantes genei (Amphibia, Plethodontidae). J Comp Physiol 123: 261–264
Roth G, Himstedt W (1978) Response characteristics of neurons in the tectum opticum ofSalamandra. Naturwissenschaften 65: 657–658
Roth G, Jordan M (1982) Response characteristics and stratification of tectal neurons in the toadBufo bufo (L.). Exp Brain Res 45: 393–398
Schürg-Pfeiffer E, Ewert J-P (1981) Investigation of neurons involved in the analysis of gestalt prey features in the frogRana temporaria. J Comp Physiol 141: 139–152
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Roth, G. Responses in the optic tectum of the salamanderHydromantes italicus to moving prey stimuli. Exp Brain Res 45, 386–392 (1982). https://doi.org/10.1007/BF01208598
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DOI: https://doi.org/10.1007/BF01208598