This description of where the nucleus accumbens is (Ac) says that it should be near the lateral ventricle, when it is quite clearly very far away? How is this?

the region surrounding the tip of the lateral ventricle, at the ventromedial margin of the rostral pole of the medial striatum (MSt) in birds is marked as the nucleus accumbens

(from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2481519/)

Furthermore the lateral ventricle seems to be in very different places in both diagrams although they are both avian brains?

img(https://avianbrain.org/papers/RevisedNomenclature.pdf figure 2)

img2 (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2481519/ figure 1)

thank you for any help :)

  • $\begingroup$ Please add references for the diagrams and quoted text. $\endgroup$ – another 'Homo sapien' Apr 15 '18 at 5:42
  • $\begingroup$ references added :) $\endgroup$ – olly1 Apr 15 '18 at 8:59

The ventricle looks in a different place simply because the first image is a transverse section whereas the second one is a sagittal section. In the sagittal version the striatum looks very far from the ventricle because it is a quite lateral slide, more medially it would look closer to it as it does in the first figure you show.

Here you can see a representation showing also a more medial transverse section. source: Vertebrate brains and evolutionary connectomics: on the origins of the mammalian ‘neocortex’. Harvey J. Karten. (2015) DOI: 10.1098/rstb.2015.0060

enter image description here

  • $\begingroup$ thank you very much for the clarification that was so useful :) $\endgroup$ – olly1 Apr 15 '18 at 9:52
  • $\begingroup$ So in the sagittal section diagram, would you still say the Ac surrounds the tip of the lateral ventricle? $\endgroup$ – olly1 Apr 15 '18 at 10:37
  • $\begingroup$ It is not visible in that figure, but is not false. $\endgroup$ – have fun Apr 15 '18 at 12:48

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