Evolution of the Limbic System

Bruce, Laura L.; Braford, Mark R.

doi:10.1016/b978-008045046-9.00965-7

Cited by 33 publications

(39 citation statements)

References 10 publications

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“…As discussed above, the nature of the preglomerular nuclei remains unclear, but even if one were to assume that they are all dorsal thalamic, one cannot assume that they are the dorsal thalamic nuclei that project to the dorsal pallium, rather than the dorsal thalamic nuclei that project to the pallial amygdala/ventral pallium. This latter notion is consonant with a more parsimonious, less contortionistic interpretation of teleostean pallia [Braford, 1995;Northcutt, 2006Northcutt, , 2008Bruce and Braford, 2008].…”

Section: Recent Hypotheses About Pallial Organization In Teleostsmentioning

confidence: 75%

“…This, together with its topological position, makes it a candidate for a ventral pallium homolog and -to get ahead of the story -Dm in teleosts [Bruce and Braford, 2008]. Topologically, P2 and P3 are positioned to correspond to the dorsal and medial pallium of tetrapods, respectively.…”

Section: Summary For Polypteriformsmentioning

confidence: 99%

“…To enable some comparisons, however, a synopsis follows -see also Murakami et al [1983], Striedter [1991], Braford [1995], Northcutt [1995Northcutt [ , 2006Northcutt [ , 2008, Meek and Nieuwenhuys [1998], Prechtl et al [1998], Folgueira et al [2004], Wullimann and Mueller [2004b], Bruce and Braford [2008], and Yamamoto and Ito [2008].…”

Section: Comparisons With Teleostsmentioning

confidence: 99%

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Stalking the Everted Telencephalon: Comparisons of Forebrain Organization in Basal Ray-Finned Fishes and Teleosts

Braford¹

2009

Brain Behav Evol

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Compared to land vertebrates and the other fishes, the basal ray-finned fishes and teleosts have morphologically unusual forebrains. The telencephalic pallium is everted, and its diencephalic inputs arise largely – not from what is clearly the dorsal thalamus but rather – from an enigmatic group of migrated nuclei of the basal diencephalon. The subpallia exhibit much less variation than the pallia. The polypteriforms have a long, thin pallial sheet that can be divided into four zones which recent data suggest could correspond to the ventral, lateral, dorsal, and medial pallia of tetrapods, with some caveats. In sturgeons and gars, the pallium is thicker and divisible into three or four zones. The data available for sturgeons and gars are not sufficient for the formulation of more than a barely working hypothesis, although a review of the existing literature has illuminated some basic unresolved issues in these taxa. The voluminous literature on the pallium of teleosts is briefly summarized. The thickened pallium is divided into four zones which are compared with those of the polypteriforms and those of the tetrapods. The topographical position of the primary olfactory target in the pallium is lateral, which is unexpected in an everted pallium. Several recent hypotheses have sought to explain this organization: partial eversion, caudolateral eversion and displacement, simple eversion with changed olfactory connections, and not quite so simple an eversion with preserved topology. These hypotheses are evaluated and some persisting problems are enumerated.

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Section: Recent Hypotheses About Pallial Organization In Teleostsmentioning

confidence: 75%

Section: Summary For Polypteriformsmentioning

confidence: 99%

Section: Comparisons With Teleostsmentioning

confidence: 99%

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Stalking the Everted Telencephalon: Comparisons of Forebrain Organization in Basal Ray-Finned Fishes and Teleosts

Braford¹

2009

Brain Behav Evol

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“…However, gene markers for the ventral pallium can identify the lateral and basomedial subregions of the blAMY: Tbr-1 Dbx-1, Lhx2/9, and Lmo3 (Remedios et al, 2004), although some cells express the lateral pallial marker emx1 (Gorski et al, 2002), which may represent migrated cells. These regional differences in developmental origin add to the complexity of establishing blAMY homology in other vertebrates (see reviews, MartinezGarcia et al, 2002;Moreno and González, 2007a;Bruce and Braford, 2009). We therefore discuss the lateral and ventral pallial amygdala in reptiles and birds, but there are not enough data at present to determine the corresponding developmental subregions in amphibians and teleosts.…”

Section: Basolateral Amygdala (Blamy) Mammalsmentioning

confidence: 99%

“…However, a consensus is emerging from hodological, neurochemical, and developmental studies that provide support for putative homologies for most of the relevant areas in the avian, reptilian, amphibian, and teleost brains ( Fig. 2) (Marín et al, 1998a;Redies and Puelles, 2001;Reiner et al, 2004;Wullimann and Mueller, 2004;Moreno and González, 2007a;Bruce and Braford, 2009). Here we present a synthesis of decades of research that has led to a greater understanding of the putative homologies across the major vertebrate lineages.…”

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confidence: 99%

The Vertebrate mesolimbic reward system and social behavior network: A comparative synthesis

O’Connell

Hofmann

2011

J of Comparative Neurology

870

879

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All animals evaluate the salience of external stimuli and integrate them with internal physiological information into adaptive behavior. Natural and sexual selection impinge on these processes, yet our understanding of behavioral decision-making mechanisms and their evolution is still very limited. Insights from mammals indicate that two neural circuits are of crucial importance in this context: the social behavior network and the mesolimbic reward system. Here we review evidence from neurochemical, tract-tracing, developmental, and functional lesion/stimulation studies that delineates homology relationships for most of the nodes of these two circuits across the five major vertebrate lineages: mammals, birds, reptiles, amphibians, and teleost fish. We provide for the first time a comprehensive comparative analysis of the two neural circuits and conclude that they were already present in early vertebrates. We also propose that these circuits form a larger social decision-making (SDM) network that regulates adaptive behavior. Our synthesis thus provides an important foundation for understanding the evolution of the neural mechanisms underlying reward processing and behavioral regulation. J. Comp. Neurol. 519:3599-3639, 2011. INDEXING TERMS: social behavior; comparative neuroanatomy; amphibian; reptile; bird; teleost; reward system; social behavior network; limbic system; neural circuitsThroughout their lives, all animals constantly face situations that provide either challenges (e.g., aggression, predation) or opportunities (e.g., reproduction, foraging, habitat selection) (for a detailed review, see O'Connell and Hofmann, 2011). In all cases, environmental cues are processed by sensory systems into a meaningful biological signal while internal physiological cues (e.g., condition, maturity) and prior experience are integrated at the same time. This process usually results in behavioral actions that are adaptive, i.e., beneficial to the animal. To accomplish this, an animal's nervous system must evaluate the salience of a stimulus and elicit a context-appropriate behavioral response. Despite tremendous progress in understanding the ecology and evolution of social behavior (Lorenz, 1952;Tinbergen, 1963;Lehrman, 1965;von Frisch, 1967;Krebs and Davies, 1993;Stephens, 2008), it is less understood where in the brain these decisions (e.g., about mate choice or territory defense) are made and how these brain circuits have arisen over the course of vertebrate evolution.Recent research has begun to decipher the neural basis of social decision-making. In mammals in particular, the neural circuits that evaluate stimulus salience and/or regulate social behavior have been uncovered to some degree: the mesolimbic reward system and social behavior network (Fig. 1). It is becoming increasingly clear that the reward system (including but not limited to the midbrain dopaminergic system) is the neural circuit where the salience of an external stimulus is evaluated (Deco and Rolls, 2005;Wickens et al., 2007), as appetitive beh...

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Distribution of sex steroid hormone receptors in the brain of an African cichlid fish, Astatotilapia burtoni

Munchrath

Hofmann

2010

J of Comparative Neurology

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Sex steroid hormones released from the gonads play an important role in mediating social behavior across all vertebrates. Many effects of these gonadal hormones are mediated by nuclear steroid hormone receptors, which are crucial for integration in the brain of external (e.g., social) signals with internal physiological cues to produce an appropriate behavioral output. The African cichlid fish Astatotilapia burtoni presents an attractive model system for the study of how internal cues and external social signals are integrated in the brain as males display robust plasticity in the form of two distinct, yet reversible, behavioral and physiological phenotypes depending on the social environment. In order to better understand where sex steroid hormones act to regulate social behavior in this species, we have determined the distribution of the androgen receptor, estrogen receptor alpha, estrogen receptor beta, and progesterone receptor mRNA and protein throughout the telencephalon and diencephalon and some mesencephalic structures of A. burtoni. All steroid hormone receptors were found in key brain regions known to modulate social behavior in other vertebrates including the proposed teleost homologs of the mammalian amygdalar complex, hippocampus, striatum, preoptic area, anterior hypothalamus, ventromedial hypothalamus, and ventral tegmental area. Overall, there is high concordance of mRNA and protein labeling. Our results significantly extend our understanding of sex steroid pathways in the cichlid brain and support the important role of nuclear sex steroid hormone receptors in modulating social behaviors in teleosts and across vertebrates.

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Evolution of the Limbic System

Cited by 33 publications

References 10 publications

Stalking the Everted Telencephalon: Comparisons of Forebrain Organization in Basal Ray-Finned Fishes and Teleosts

Stalking the Everted Telencephalon: Comparisons of Forebrain Organization in Basal Ray-Finned Fishes and Teleosts

The Vertebrate mesolimbic reward system and social behavior network: A comparative synthesis

Distribution of sex steroid hormone receptors in the brain of an African cichlid fish, Astatotilapia burtoni

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