Summary
The regional glucose utilization in the telencephalon of toadsBufo bufo during stimulation with different visual key stimuli was quantitatively mapped by means of the14C-2DG autoradiographic method: (i) a 4×28 mm2 worm-like stripe (W) eliciting prey catching responses, (ii) a 84×84 mm2 square (S) releasing predator avoidance responses, and (iii) a 28×4 mm2 antiwormlike stripe (A) eliciting no motor response.
Various telencephalic structures changed14C- 2DG uptake statistical significantly during stimulation with the above visual objects in comparison with binocular enucleated animals (brain-to-brain comparison) and in comparison between both hemispheres in monocular animals (interhemispherical comparison): (1) The ventral two-thirds of the posterior half of the medial palliumdecreased 14C-2DG uptake during W- and S-experiments, particularly in response to W. (2) In the posterior two-thirds of the lateral pallium,14C- 2DG uptake wasdecreased in response to the worm-, andincreased in response to the square (S) and antiworm stimuli (A). (3) The ventral striatumincreased uptake of14C-2DG during the animal's response to W- and S-stimuli significantly stronger than in the A-experiment. (4) The dorsal striatum also showed a significant change in14C-2DG uptake which, on a lower level, was not correlated with the type of stimulation experiment.
Various prosencephalic structures are involved in circuitries related to attentional phenomena and the gating of prey catching and predator avoidance behavior. The different functions of these structures are discussed.
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Abbreviations
- A :
-
anterior dorsal thalamus
- ACC :
-
nucleus ac-cumbens
- APL :
-
amygdala, pars lateralis
- APM :
-
amygdala, pars medialis
- aLP :
-
anterior third of the lateral pallium
- aMP :
-
anterior half of the medial pallium
- B :
-
Bed nucleus of the palliai commissure
- Ea :
-
entopeduncular nucleus, pars anterior
- dMP :
-
dorsal medial pallium
- dP :
-
dorsal pallium
- dSTR :
-
dorsal striatum
- La :
-
lateral thalamic nucleus, anterior division
- Lpd :
-
lateral thalamic nucleus, postero-dorsal division
- OT :
-
optic tectum
- P :
-
posterior thalamic nucleus
- pLP :
-
posterior two-thirds of the lateral pallium
- PO :
-
preoptic area of the hypothalamus;
- RET :
-
tegmental portion of the medial reticular formation
- SEP :
-
medial (MS) and lateral (LS) septum
- vMP :
-
ventral two-thirds of the medial pallium (MP)
- vSTR :
-
ventral striatum
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Finkenstädt, T., Adler, N.T., Allen, T.O. et al. Regional distribution of glucose utilization in the telencephalon of toads in response to configurational visual stimuli: a14C-2DG study. J. Comp. Physiol. 158, 457–467 (1986). https://doi.org/10.1007/BF00603792
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DOI: https://doi.org/10.1007/BF00603792