Reptiles

Donkelaar, Hans J. ten

doi:10.1007/978-3-642-18262-4_20

Cited by 63 publications

(55 citation statements)

References 725 publications

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“…Such cortical/ aDVR-BG subunits probably form subsystems that mediate different behaviors [see Baxter et al, 1996Baxter et al, , 2000a. Thus, although problems determining neuroanatomical boundaries prevented us from subdividing aDVR for quantitative analysis, we believe that the behaviors studied here are mediated not just by the BG, but by aDVR-BG systems (= BG-systems) [Parent and Hazrati, 1995a;ten Donkelaar, 1998a;Voogd et al, 1998] that then project to thalamus, cerebellum, brainstem, etc. for final output, including neural connections needed for bilateral motor activity integration.…”

Section: Discussionmentioning

confidence: 99%

“…[Those seeking fuller exposition are referred elsewhere; Smeets, 1992;Bruce and Neary, 1995;Medina and Reiner, 1995;Parent, 1997;ten Donkelaar, 1998a;Reiner et al, 1998;and Clark et al, 2000, and references therein]. One difference among the three amniote classes is in the pallidum, which in mammals is clearly divided by white matter into two components: the lateral globus pallidus (GPL), and the medial globus pallidus (GPM).…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, marked similarities in BG-system organization and neuro-chemistry are recognized among the three living amniote classes [Northcutt, 1978;Ulinski, 1983;Reiner et al, 1984Reiner et al, , 1998Parent, 1986;Schwerdtfeger and Smeets, 1988;Smeets and Steinbusch, 1990;Karten, 1991;Gerfen, 1992;Smeets, 1992;Reiner, 1993;Joel and Weiner, 1994;Medina and Reiner, 1995;Parent and Hazrati, 1995a, b;Parent et al, 1995;ten Donkelaar, 1998a;Voogd et al, 1998]. Although the BG rudiments of extant anamniotes have clear homologies with the more elaborate BG of amniotes [Bruce and Neary, 1995;Medina and Reiner, 1995;Butler and Hodos, 1996;Parent, 1997;Marin et al, 1998;Reiner et al, 1998;ten Donkelaar, 1998b], most authors have been more impressed by the disparities in BG size, numbers of cells, organization, and inter-region connections of amniotes vs. anamniotes [Reiner et al, 1998].…”

Section: Discussionmentioning

confidence: 99%

“…Given the topographical arrangement of cortical/DVR efferents to the striatum in amniotes [Ulinski, 1983;Parent, 1986;Parent and Hazrati, 1995a;ten Donkelaar, 1998a;Voogd et al, 1998], these medial and lateral aDVR regions are probably afferent to VM-and DL-BG, respectively. Such cortical/ aDVR-BG subunits probably form subsystems that mediate different behaviors [see Baxter et al, 1996Baxter et al, , 2000a.…”

Section: Discussionmentioning

confidence: 99%

“…One difference with mammals is that, rather than having 'association' isocortex on either side of primary cortex, as in all reptiles and birds the anole has a 'dorsal ventricular ridge' (DVR) pushed under primary cortex during development, ultimately coming to lie over the basal ganglia (BG). The DVR is thought to share some homology with mammalian isocortex [Ulinski, 1983;Dubbeldam, 1998;ten Donkelaar, 1998a], and possibly also with related limbic/paralimbic regions [Bruce and Neary, 1995;Striedter, 1997].…”

Section: Introductionmentioning

confidence: 99%

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Brain Mediation of <i>Anolis</i> Social Dominance Displays

Lr¹,

et al. 2001

Brain Behav Evol

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Ritualistic displays of aggressive intent are important social signals, often obviating physically dangerous engagement. To date, however, brain regions mediating such behaviors are not established. Here we used male Anolis carolinensis together with an in vivo ¹⁴C-2-deoxyglucose method to determine patterns of brain activation during elicitation of this animal’s dominance displays vs. other behaviors. By patching one eye regional brain activation in the hemisphere receiving display-evocative visual stimuli (‘seeing’ side) was compared to activity in the contralateral brain that did not see specific stimuli (‘patched’ side); this was quantitated as the ratio of seeing/patched activity for brain regions of interest. Lone males displaying dominantly to mirrors activated dorsolateral basal ganglia (BG) in the seeing, compared to the patched hemisphere; this was not seen in various non-displaying controls. Degree of dorsolateral BG activation also correlated with a measure of dominant display activity, but not with locomotion. In socially stable pairs, displaying dominants showed similar activation of dorsolateral BG, but deactivated ventromedial BG; non-dominant cagemates displaying submissively had the opposite pattern. When cohabiting peacefully without displaying, paired dominants’ and subordinates’ brain activity patterns were similar to each other. Thus, different BG subsystems seem involved in dominant vs. submissive display behaviors. Given similarities in both social displays and BG organization, homologous brain systems might have similar functions in members of other amniote classes, including primates.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Brain Mediation of <i>Anolis</i> Social Dominance Displays

Lr¹,

et al. 2001

Brain Behav Evol

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Reelin mRNA expression during embryonic brain development in the turtleEmys orbicularis

et al. 1999

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Pallial and subpallial derivatives in the embryonic chick and mouse telencephalon, traced by the expression of the genes Dlx-2, Emx-1, Nkx-2.1, Pax-6, and Tbr-1

Kuwana²,

et al. 2000

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Pallial and subpallial morphological subdivisions of the developing chicken telencephalon were examined by means of gene markers, compared with their expression pattern in the mouse. Nested expression domains of the genes Dlx-2 and Nkx-2.1, plus Pax-6-expressing migrated cells, are characteristic for the mouse subpallium. The genes Pax-6, Tbr-1, and Emx-1 are expressed in the pallium. The pallio-subpallial boundary lies at the interface between the Tbr-1 and Dlx-2 expression domains. Differences in the expression topography of Tbr-1 and Emx-1 suggest the existence of a novel "ventral pallium" subdivision, which is an Emx-1-negative pallial territory intercalated between the striatum and the lateral pallium. Its derivatives in the mouse belong to the claustroamygdaloid complex. Chicken genes homologous to these mouse genes are expressed in topologically comparable patterns during development. The avian subpallium, called "paleostriatum," shows nested Dlx-2 and Nkx-2.1 domains and migrated Pax-6-positive neurons; the avian pallium expresses Pax-6, Tbr-1, and Emx-1 and also contains a distinct Emx-1-negative ventral pallium, formed by the massive domain confusingly called "neostriatum." These expression patterns extend into the septum and the archistriatum, as they do into the mouse septum and amygdala, suggesting that the concepts of pallium and subpallium can be extended to these areas. The similarity of such molecular profiles in the mouse and chicken pallium and subpallium points to common sets of causal determinants. These may underlie similar histogenetic specification processes and field homologies, including some comparable connectivity patterns.

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Reptiles

Cited by 63 publications

References 725 publications

Brain Mediation of <i>Anolis</i> Social Dominance Displays

Brain Mediation of <i>Anolis</i> Social Dominance Displays

Reelin mRNA expression during embryonic brain development in the turtleEmys orbicularis

Pallial and subpallial derivatives in the embryonic chick and mouse telencephalon, traced by the expression of the genes Dlx-2, Emx-1, Nkx-2.1, Pax-6, and Tbr-1

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