Building the central complex of the grasshopper Schistocerca gregaria: temporal topology organizes the neuroarchitecture of the w, x, y, z tracts

Williams, J. L. D.; Güntner, Michaela; Boyan, George

doi:10.1016/j.asd.2004.11.001

Cited by 39 publications

(93 citation statements)

References 55 publications

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“…1f) [29,38]. These striking differences between Type I and Type II lineages are also manifest in the developing brain of Drosophila [25][26][27][28].…”

Section: Novel Forms Of Neurogenesis In Central Complex Developmentmentioning

confidence: 99%

“…This raises the question of how such a large number of neurons can be generated by such a small number of NSCs during such a short developmental time period. [34,38]. Genetic analysis reveals that a similar set of four NSCs is found in the developing brain of Drosophila, and each of these four NSCs also generates a specific lineage-related cluster of neurons which contribute fibers to the developing central complex (Fig.…”

Section: Neural Stem Cells and Lineage-specific Development Of The Cementioning

confidence: 99%

“…This is noteworthy since the central complex commands a high proportion of the neurons found in the brain [1,21,45], a fact which documents that there has been a major evolutionary investment towards generating its intricate neuroarchitecture [2,7,46]. Further, developmental constraints require that this complex neuroarchitecture be built within a 5 very limited time frame; during mid-to late-embryogenesis in organisms that develop directly (grasshopper) [38], and during the larva to adult transition for organisms that develop indirectly (Drosophila) [47][48][49]. This raises the question of how such a large number of neurons can be generated by such a small number of NSCs during such a short developmental time period.…”

Section: Neural Stem Cells and Lineage-specific Development Of The Cementioning

confidence: 99%

“…All of the neurons are present by 7 mid-embryogenesis in the grasshopper [34,38] and by early metamorphosis in Drosophila …”

Section: Novel Forms Of Neurogenesis In Central Complex Developmentmentioning

confidence: 99%

“…In the grasshopper and Drosophila, the neurons of the central brain, defined as the supraesophageal ganglion without the optic lobes [30], derive from approximately 100 bilaterally symmetrical pairs of primary progenitors with neural stem cell properties (often referred to as neuroblasts for historical reasons), each of which has been individually identified [31][32][33][34][35][36][37][38]. Neural stem cells (NSCs) are primary progenitor cells that give rise to neural lineages comprising differentiated neurons or glial cells (for a review, see [39]).…”

Section: Neural Stem Cells and Lineage-specific Development Of The Cementioning

confidence: 99%

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Mechanisms for complexity in the brain: generating the insect central complex

Boyan¹,

Reichert

2011

Trends in Neurosciences

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“…1f) [29,38]. These striking differences between Type I and Type II lineages are also manifest in the developing brain of Drosophila [25][26][27][28].…”

Section: Novel Forms Of Neurogenesis In Central Complex Developmentmentioning

confidence: 99%

Section: Neural Stem Cells and Lineage-specific Development Of The Cementioning

confidence: 99%

Section: Neural Stem Cells and Lineage-specific Development Of The Cementioning

confidence: 99%

“…All of the neurons are present by 7 mid-embryogenesis in the grasshopper [34,38] and by early metamorphosis in Drosophila …”

Section: Novel Forms Of Neurogenesis In Central Complex Developmentmentioning

confidence: 99%

Section: Neural Stem Cells and Lineage-specific Development Of The Cementioning

confidence: 99%

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Mechanisms for complexity in the brain: generating the insect central complex

Boyan¹,

Reichert

2011

Trends in Neurosciences

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Patients' preferences for decision making and the feeling of being understood in the medical encounter among patients with rheumatoid arthritis

Ishikawa¹,

Hashimoto²,

Yano³

2006

Arthritis & Rheumatism

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Objective. To examine how patients' preferences for decision making in the medical encounter affect the association between their participation style and the feeling of being understood by the physician. Methods. The study group comprised 115 patients with rheumatoid arthritis who were under continuous care by 8 rheumatologists at a university-affiliated rheumatology clinic in Tokyo, Japan. A questionnaire was distributed just after each encounter, in which patients' self-reported participation in communication during the visit, preference for decision making, and the feeling of being understood were measured. The feeling of being understood was regressed on the participation style and preference for decision making after controlling for demographic and functional variables.

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Neuroarchitecture of the central complex of the desert locust: Intrinsic and columnar neurons

Heinze

Homberg

2008

J of Comparative Neurology

147

384

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The central complex is a group of neuropils in the center of the insect brain. It consists of four major subunits: the upper and lower divisions of the central body (CBU, CBL), the protocerebral bridge (PB), and the paired noduli. A distinctive feature of the central complex is a modular architecture characterized by rows of 16 columns, intersected in the central body by stacks of layers. Evidence from locusts suggests that the central complex plays a major role in sky compass orientation. To understand signal processing in this brain area further, we have analyzed the morphologies of columnar neurons of the central complex of the locust Schistocerca gregaria. Intracellular dye fills revealed 21 types of columnar neurons that connect columns of different subunits, three types of pontine neurons linking pairs of columns within the CBU, and one amacrine cell. Most neurons appeared to be part of isomorphic sets with cell type-specific heterolateral projection patterns. Evaluation of arborization areas and neuron polarity suggests that these neurons are either intrinsic to the central complex or provide output to the lateral accessory lobes (LALs) or anterior lip region. No direct connections were found between the CBU and CBL. Instead, neurons of either subdivision were connected with the PB, but projected to non-overlapping regions in the LALs and to different layers of the noduli. This study provides novel insights into the functional organization of the central complex, especially with respect to its likely role in right-left signal matching and decision making.

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Building the central complex of the grasshopper Schistocerca gregaria: temporal topology organizes the neuroarchitecture of the w, x, y, z tracts

Cited by 39 publications

References 55 publications

Mechanisms for complexity in the brain: generating the insect central complex

Mechanisms for complexity in the brain: generating the insect central complex

Patients' preferences for decision making and the feeling of being understood in the medical encounter among patients with rheumatoid arthritis

Neuroarchitecture of the central complex of the desert locust: Intrinsic and columnar neurons

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