Isthmotectal axons maintain normal arbor size but fail to support normal branch numbers in dark‐reared <i>Xenopus laevis</i>

Udin, Susan B.

doi:10.1002/cne.21633

Cited by 3 publications

(1 citation statement)

References 46 publications

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“…Kemunculannya diawali dengan munculnya kebijakan pemerintah dalam pemerintahan daerah atau dikenal otonomi daerah Undang-Undang Nomor 22 tahun 1999. Kelahiran kebijakan pemerintah ini didorong oleh perubahan dan tuntutan kebutuhan masyarakat dalam dimensi globalisasi yang ditandai kemajuan ilmu pengetahuan dan tehnologi begitu pesat sehingga kehidupan penuh persaingan dalam segi apapun (Udin. S, 2008).…”

Section: Pendahuluanunclassified

Hubungan Motivasi dan Minat Belajar Terhadap Pencapaian Kompetensi Pada Mahasiswa Keperawatan Semester Enam Di Akademi Keperawatan Wirahusada Medan

Limbong

2023

JUKEJ

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The principal issue in this research are many factors that affect the achievement of clinical competencies of nursery practice that includes the students’ motivation and interest factors. Student willingness to participate in clinical practice as a nurse nursery is a professional motivational and has a good competence so that they can compete in the world of work. The practice of nursery clinic is a place to learn before entering into the world work. This research aims to find out the relationship of interest and learning motivation with achievement of target competencies of nursery practice clinic VI semester students study program Nursery Wirahusada Medan academic year 2022.This research is a cross sectional correlational approach. Entire student population is Academic Nursery Wirahusada Medan the academic year 2022 amounted to 54 people, with total sampling. The independent variables of motivation and learning interest. Dependent variable was the achievement of clinical competencies of nursery practice. Measurement of variables using questionnaires and observation sheets, and then analyzed using multiple linear regression method.Based the results of statistical tests to obtain the R square of 0.221, at variablemotivation in getting value p = 0.043 while in the learning interest variables obtained P value = 0.002. Regression coefficient shown in the motivation 1.571 and 95% CI = 1.063<PR,2.322 and value PR interest 1.925 and 95% CI = 1.266. PR.2.927. This research concludes that the motivation and interest have a significant relationship with achievement of target competencies of nursery practice clinic.

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Section: Pendahuluanunclassified

Hubungan Motivasi dan Minat Belajar Terhadap Pencapaian Kompetensi Pada Mahasiswa Keperawatan Semester Enam Di Akademi Keperawatan Wirahusada Medan

Limbong

2023

JUKEJ

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Binocular maps in Xenopus tectum: Visual experience and the development of isthmotectal topography

Udin

2012

Developmental Neurobiology

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Xenopus frogs have a prominent binocular field that develops as a consequence of the migration of the eyes during the remodeling of the head during and after metamorphosis. In the optic tectum, a topographic representation of the ipsilateral eye develops during this same period. It is relayed indirectly, via the nucleus isthmi. In the early stages of binocular development, the topographic matching of the ipsilateral input and the retinotectal input from the contralateral eye is largely governed by chemical cues, but the ultimate determinant of the ipsilateral map is binocular visual input. Visual input is such a dominant factor that abnormal visual input resulting from unilateral eye rotation can induce isthmotectal axons to alter their trajectories dramatically, even shifting their terminal zones from one pole of the tectum to the other. This plasticity normally is high only during a 3–4 month critical period of late tadpole-early juvenile life, but the critical period can be extended indefinitely by dark-rearing. NMDA receptors are involved in this process; plasticity can be blocked or promoted by chronic treatment with NMDA antagonists or agonists, respectively. Cholinergic nicotinic receptors on retinotectal axons are likely to play an essential role as well. Modifications in the polysialylation of NCAM are correlated with the state of plasticity. The circuitry underlying binocular plasticity is not yet fully understood but has proved not to be a simple convergence of ipsilateral and contralateral inputs onto the same targets.

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Neurophysiological and Behavioral Analysis in Xenopus

Szaro

2021

Cold Spring Harb Protoc

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Because of its resilience to hypoxia and trauma, the frog has long been a favored preparation of neurophysiologists. Its use has led to the discovery of many fundamental properties of neurons and neural circuits. Neurophysiologists were originally attracted to Xenopus embryos, tadpoles, and frogs because of their ready availability, their external development, and the anatomical accessibility and relatively simple neural circuitry of the Xenopus visual, locomotory, and vocalization systems. Nowadays, the sequencing of Xenopus genomes and the panoply of tools for manipulating gene expression have created new opportunities for neurophysiologists to address the molecular underpinnings of how neurons generate behaviors in a vertebrate. Here, we introduce protocols for harnessing the power of Xenopus for performing electrophysiological studies of neural circuitry in the developing optic tectum and spinal cord, as well as in vocalization, and for studying the ontogeny of locomotory behavior.

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Isthmotectal axons maintain normal arbor size but fail to support normal branch numbers in dark‐reared Xenopus laevis

Cited by 3 publications

References 46 publications

Hubungan Motivasi dan Minat Belajar Terhadap Pencapaian Kompetensi Pada Mahasiswa Keperawatan Semester Enam Di Akademi Keperawatan Wirahusada Medan

Hubungan Motivasi dan Minat Belajar Terhadap Pencapaian Kompetensi Pada Mahasiswa Keperawatan Semester Enam Di Akademi Keperawatan Wirahusada Medan

Binocular maps in Xenopus tectum: Visual experience and the development of isthmotectal topography

Neurophysiological and Behavioral Analysis in Xenopus

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