Stable programming for map orientation in fused eye fragments in Xenopus

Development ◽  
1980 ◽  
Vol 55 (1) ◽  
pp. 123-142
Author(s):  
C. Straznicky ◽  
R. M. Gaze
Keyword(s):  
Compound Eyes ◽  
Xenopus Embryos ◽  
The Face ◽  
Anatomical Arrangement ◽  
Developmental Programme ◽  
The Right

Compound eyes were formed in Xenopus embryos at stages 32/33 by fusion in the right orbit of (1) two right naso-ventral halves, (2) two right ventral halves, (3) two right temporoventral halves, (4) one right and one left naso-ventral half and (5) one right and one left temporo-ventral half. The contralateral visuotectal projections from the operated eyes later showed abnormalities reflecting the anatomical arrangement of the fused fragments. The experiments thus revealed considerable stability of the developmental programme leading to tbe later development of map orientation, in the face of operative disturbance of the types used.

Stable programming for map orientation in disarranged embryonic eyes in Xenopus

Development ◽  
1980 ◽  
Vol 55 (1) ◽  
pp. 143-165
Author(s):  
R. M. Gaze ◽  
C. Straznicky
Keyword(s):  
Ionic Strength ◽  
Left Half ◽  
Xenopus Embryos ◽  
Developmental Programme ◽  
The Right ◽  
Low Ionic Strength

In Xenopus embryos of stage 32/33 either the temporal or nasal half of the right eye anlage was replaced by a corresponding left half, giving a right eye in which the grafted half was inverted dorsoventrally. In other embryos either the dorsal or ventral half of the right eye anlage was replaced by a corresponding left half, giving an eye in which the grafted half was reversed nasotemporally. These four types of operation were intended to produce eyes that were disarranged internally but which each had a complete range of positional values. The visuotectal projections from such eyes, recorded later in life, in most cases showed axial reversal of half of the map, reflecting the nature of the operation. The results thus demonstrate that the developmental programme in each of the fused retinal fragments is stable in relation to the eventual orientation of the map from that fragment. Operations to produce eyes with an inverted temporal half, if performed in operating solution of low ionic strength, may result in mirror reduplication and the formation of double nasal maps. It is suggested that this phenomenon may underlie previous reports of reprogramnting of one eye fragment by another.

scholarly journals Chronic (Rasmussen’s) Encephalitis in an Adult

2003 ◽  
Vol 30 (3) ◽  
pp. 263-265 ◽  
Author(s):  
Richard Wennberg ◽  
Sukriti Nag ◽  
Mary-Pat McAndrews ◽  
Andres M. Lozano ◽  
Richard Farb ◽  
...  
Keyword(s):  
Visual Field ◽  
Right Visual Field ◽  
Loss Of Consciousness ◽  
Mild Head Injury ◽  
Partial Seizures ◽  
Complex Partial Seizures ◽  
The Past ◽  
Rasmussen’S Encephalitis ◽  
The Face ◽  
The Right

A 24-year-old woman was referred because of incompletely-controlled complex partial seizures. Her seizures had started at age 21, after a mild head injury with brief loss of consciousness incurred in a biking accident, and were characterized by a sensation of bright flashing lights in the right visual field, followed by numbness and tingling in the right foot, spreading up the leg and to the arm, ultimately involving the entire right side, including the face. Occasionally they spread further to involve right facial twitching with jerking of the right arm and leg, loss of awareness and, at the onset of her epilepsy, rare secondarily generalized convulsions. Seizure frequency averaged three to four per month. She was initially treated with phenytoin and clobazam and subsequently changed to carbamazepine 800 milligrams per day. She also complained that her right side was no longer as strong as her left and that it was also numb, especially the leg, but felt that this weakness had stabilized or improved slightly over the past two years.

The Essence of Christianity and the Cross of Christ

1914 ◽  
Vol 7 (4) ◽  
pp. 538-594
Author(s):  
Benjamin B. Warfield
Keyword(s):  
New Haven ◽  
Liberal Theology ◽  
Religious System ◽  
The World ◽  
Cross Of Christ ◽  
The Face ◽  
Divinity School ◽  
The Common ◽  
The Cross ◽  
The Right

In a recent number of The Harvard Theological Review, Professor Douglas Clyde Macintosh of the Yale Divinity School outlines in a very interesting manner the religious system to which he gives his adherence. For “substance of doctrine” (to use a form of speech formerly quite familiar at New Haven) this religious system does not differ markedly from what is usually taught in the circles of the so-called “Liberal Theology.” Professor Macintosh has, however, his own way of construing and phrasing the common “Liberal” teaching; and his own way of construing and phrasing it presents a number of features which invite comment. It is tempting to turn aside to enumerate some of these, and perhaps to offer some remarks upon them. As we must make a selection, however, it seems best to confine ourselves to what appears on the face of it to be the most remarkable thing in Professor Macintosh's representations. This is his disposition to retain for his religious system the historical name of Christianity, although it utterly repudiates the cross of Christ, and in fact feels itself (in case of need) quite able to get along without even the person of Christ. A “new Christianity,” he is willing, to be sure, to allow that it is—a “new Christianity for which the world is waiting”; and as such he is perhaps something more than willing to separate it from what he varyingly speaks of as “the older Christianity,” “actual Christianity,” “historic Christianity,” “actual, historical Christianity.” He strenuously claims for it, nevertheless, the right to call itself by the name of “Christianity.”

What of the Child? Preventing the Publication of Children's Names After the Age of 18

2021 ◽  
Vol 24 ◽  
pp. 1-31
Author(s):  
Sophy Baird
Keyword(s):  
Criminal Justice ◽  
Criminal Justice System ◽  
Justice System ◽  
Freedom Of Expression ◽  
Best Interests ◽  
Child Victims ◽  
Criminal Proceedings ◽  
The Right To Privacy ◽  
The Face ◽  
The Right

Children are afforded a number of protections when they encounter the criminal justice system. The need for special protection stems from the vulnerable position children occupy in society. When children form part of the criminal justice system, either by being an offender, victim, or witness, they may be subjected to harm. To mitigate against the potential harm that may be caused, our law provides that criminal proceedings involving children should not be open to the public, subject to the discretion of the court. This protection naturally seems at odds with the principle of open justice. However, the courts have reconciled the limitation with the legal purpose it serves. For all the protection and the lengths that the law goes to protect the identity of children in this regard, it appears there is an unofficial timer dictating when this protection should end. The media have been at the forefront of this conundrum to the extent that they believe that once a child (offender, victim, or witness) turns 18 years old, they are free to reveal the child's identity. This belief, grounded in the right to freedom of expression and the principle of open justice, is at odds with the principle of child's best interests, right to dignity and the right to privacy. It also stares incredulously in the face of the aims of the Child Justice Act and the principles of restorative justice. Measured against the detrimental psychological effects experienced by child victims, witnesses, and offenders, this article aims to critically analyse the legal and practical implications of revealing the identity of child victims, witnesses, and offenders after they turn 18 years old.

Manufacturability Analysis for Solid Freeform Fabrication

1999 ◽  
Author(s):  
R. K. Arni ◽  
S. K. Gupta
Keyword(s):  
Systematic Approach ◽  
Solid Freeform Fabrication ◽  
Second Step ◽  
Freeform Fabrication ◽  
Design Tolerance ◽  
The Face ◽  
The Right ◽  
The Given ◽  
Manufacturing Problems ◽  
Case Effect

Abstract This paper describes a systematic approach to analyzing manufacturability of parts produced using Solid Freeform Fabrication (SFF) processes with flatness, parallelism and perpendicularity tolerance requirements on the planar faces of the part. SFF processes approximate objects using layers, therefore the part being produced exhibits stair-case effect. The extent of this stair-case effect depends on the angle between the build orientation and the face normal. Therefore, different faces whose direction normal is oriented differently with respect to the build direction may exhibit different values of inaccuracies. We use a two step approach to perform the manufacturability analysis. We first analyze each specified tolerance on the part and identify the set of feasible build directions that can be used to satisfy that tolerance. As a second step, we take the intersection of all sets of feasible build directions to identify the set of build directions that can simultaneously satisfy all specified tolerance requirements. If there is at least one build direction that can satisfy all tolerance requirements, then the part is considered manufacturable. Otherwise, the part is considered non-manufacturable. Our research will help SFF designers and process providers in the following ways. By evaluating design tolerances against a given process capability, it will help designers in eliminating manufacturing problems and selecting the right SFF process for the given design. It will help process providers in selecting a build direction that can meet all design tolerance requirements.

The Right to Freedom of Thought in the European Convention of Human Rights

2021 ◽  
pp. 1-34
Author(s):  
Patrick O’Callaghan ◽  
Bethany Shiner
Keyword(s):  
Human Rights ◽  
Personal Development ◽  
Industrial Revolution ◽  
European Convention ◽  
Inner Life ◽  
Article 9 ◽  
The Face ◽  
Technological Developments ◽  
Freedom Of Thought ◽  
The Right

Abstract This paper examines the right to freedom of thought in the European Convention on Human Rights against the background of technological developments in neuroscience and algorithmic processes. Article 9 echr provides an absolute right to freedom of thought when the integrity of our inner life or forum internum is at stake. In all other cases, where thoughts have been manifested in some way in the forum externum, the right to freedom of thought is treated as a qualified right. While Article 9 echr is a core focus of this paper, we argue that freedom of thought is further supported by Articles 8, 10 and 11 echr. This complex of rights carves out breathing space for the individual’s personal development and therefore supports the enjoyment of freedom of thought in its fullest sense. Charged with ‘maintaining and promoting the ideals and values of a democratic society’ as well as ensuring that individual human rights are given ‘practical and effective protection’, this paper predicts that the ECtHR will make greater use of the right to freedom of thought in the face of the emerging challenges of the Fourth Industrial Revolution.

Spreading of hemiretinal projections in the ipsilateral tectum following unilateral enucleation: a study of optic nerve regeneration in Xenopus with one compound eye

Development ◽  
1981 ◽  
Vol 61 (1) ◽  
pp. 259-276
Author(s):  
Charles Straznicky ◽  
David Tay
Keyword(s):  
Optic Nerve ◽  
Nerve Regeneration ◽  
Compound Eye ◽  
Rapid Expansion ◽  
Compound Eyes ◽  
Optic Nerve Regeneration ◽  
Xenopus Embryos ◽  
Retinotectal Projections ◽  
Optic Fibre

Right compound eyes were formed in Xenopus embryos at stages 32–33 by the fusion of two nasal (NN), two ventral (VV) or two temporal (TT) halves. Shortly after metamorphosis the optic nerve from the compound eye was sectioned and the left intact eye removed. The retinotectal projections from the compound eye to the contralateral and ipsilateral tecta were studied by [3H]proline autoradiography and electrophysiological mapping between 6 weeks and 5 months after the postmetamorphic surgery. The results showed that NN and VV eyes projected to the entire extent of both tecta. In contrast, optic fibre projection from TT eyes, although more extensive than the normal temporal hemiretinal projection, failed to cover the caudomedial portion of the tecta. The visuotectal projections in all three combinations corresponded to typical reduplicated maps to be expected from such compound eyes, where each of the hemiretinae projected across the contralateral and ipsilateral tecta in an overlapping fashion. The rapid expansion of the hemiretinal projections of the compound eyes in the ipsilateral tectum following the removal of the resident optic fibre projection suggests that tectal markers may be carried and deployed by the incoming optic fibres themselves.

Ambidexterity [L'Homme droit et l'Homme gauche: les Ambidextres]. (Revue philosophique, October, 1901.) Biervliet, J. J. van.

1902 ◽  
Vol 48 (201) ◽  
pp. 348-349
Author(s):  
Havelock Ellis
Keyword(s):  
Uniform Method ◽  
Careful Study ◽  
The Face ◽  
The Right ◽  
Two Sides ◽  
Careful Investigation

Professor van Biervliet has now completed his very careful study of right-sidedness and left-sidedness (already summarised in the Journal) by a still more careful investigation of ambidextrous persons. In the first place by photography, according to a special and uniform method, he finds that in the ambidextrous the two sides of the face, as well as the arms, are fairly alike, the face being slightly more developed on the right side, as among left-sided people, but not in so marked a degree. They occupy much the same position, indeed, throughout the investigation. When compared with right-sided and left-sided people as regards sensory acuteness, it is found that while the right-sided have predominant sensory acuteness on the right side, both the left-sided and the ambidextrous can see further, hear better, possess more acute tactile and muscular sense, on the left side, so that ambidexterity may be regarded as a variety of left-sidedness of more symmetrical anatomical type. In all respects the ambidextrous almost or quite resembled the left-sided.

scholarly journals A prospective study of 39 patients with trigeminal neuralgia treated with percutaneous balloon compression

2011 ◽  
Vol 69 (2a) ◽  
pp. 221-226 ◽  
Author(s):  
Wuilker Knoner Campos ◽  
Marcelo N. Linhares
Keyword(s):  
Trigeminal Neuralgia ◽  
Female Gender ◽  
Safe Procedure ◽  
Approval Ratings ◽  
Balloon Compression ◽  
Percutaneous Balloon ◽  
Percutaneous Balloon Compression ◽  
The Face ◽  
The Right ◽  
A Prospective Study

OBJECTIVE: Trigeminal neuralgia is the most common facial pain. It may be treated with percutaneous balloon compression (PBC), which is considered to be a safe and efficient procedure. The purpose of this study was to review our results with PBC and to assess the factors influencing the outcome. METHOD: A multivariate analysis was used to study 39 patients during a 50-month postoperative period. RESULTS: There was predominance of the female gender (54%), the right side of the face (84%) and V2V3 roots of trigeminal nerve (33%). The mean age was 62.3 years. No major complications or deaths occurred. Among all variables, postoperative hypoesthesia was the single prognostic factor capable of positively influencing the results (p=0.02). Most patients (80%) were pain-free after 50 months with a 90% satisfaction rate. CONCLUSION: PBC was a safe procedure with low morbidity, no mortality, high approval ratings, and was an important improving on patients' quality of life.

Doing the right thing in the workplace: Responsibility in the face of accountability

1995 ◽  
Vol 8 (1) ◽  
pp. 35-56 ◽  
Author(s):  
Jennifer J. Dose ◽  
Richard J. Klimoski
Keyword(s):  
The Face ◽  
The Right
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