Mark M. G. Walton

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A total of 2414 new di-, tri- and tetra-nucleotide non-redundant SSR primer pairs, representing 2240 unique marker loci, have been developed and experimentally validated for rice (Oryza sativa L.). Duplicate primer pairs are reported for 7% (174) of the loci. The majority (92%) of primer pairs were developed in regions flanking perfect repeats > or = 24 bp(More)
STUDY DESIGN An experimental study of cardiovascular complications that arise during vertebroplasty was conducted. OBJECTIVE To investigate the sequential occurrence of fat embolism and hypotension during vertebroplasty. SUMMARY OF BACKGROUND DATA Vertebroplasty, the augmentation of vertebrae with polymethylmethacrylate, is a technique for treating(More)
The use of absorbable orthopedic implants has increased substantially during the last decade. Currently, most of them are fabricated from poly-L-lactide (PLLA), its co-polymers, or mixtures with other constituents. In vivo, PLLA persists for years after its surgical role has ended, which is confirmed by a long-term histological study of PLLA implanted in(More)
One important behavioral role for head movements is to assist in the redirection of gaze. However, primates also frequently make head movements that do not involve changes in the line of sight. Virtually nothing is known about the neural basis of these head-only movements. In the present study, single-unit extracellular activity was recorded from the(More)
When humans or monkeys are asked to make saccades to visual targets accompanied by one or more distractors, the two dimensional trajectory of the saccade will sometimes display significant curvature. Port and Wurtz used dual electrode recordings to show that this phenomenon is associated with activity at more than one site in superior colliculus (SC). The(More)
It has long been believed that the superior colliculus (SC) is involved in the production of saccades but plays no role in the generation of vergence eye movements. However, results from several recent studies suggest that it may be worthwhile to examine the role of the SC in saccade-vergence interactions. Specifically, the available literature suggests two(More)
One important behavioral role for head movements is to assist in the redirection of gaze. However, primates also frequently make head movements that do not involve changes in the line of sight. Virtually nothing is known about the neural basis of these head-only movements. In the present study, single unit extracellular activity was recorded from the(More)
The countermanding saccade task has been used in many studies to investigate the neural mechanisms that underlie the decision to execute or restrain rapid eye movements. In this task, the presentation of a saccade target is sometimes followed by the appearance of a stop cue that indicates that the subject should cancel the planned movement. Performance has(More)
  • M Walton
  • Arthroscopy : the journal of arthroscopic…
  • 1999
Anterior cruciate ligament replacement was performed on 71 sheep to compare graft security using a titanium or an absorbable polyglyconate interference screw (Acufex, Mansfield, MA) to hold the bone-patellar tendon-bone autograft. Early self mobilization was followed later by retrieval of most specimens up to 12 weeks. No grafts failed in vivo or migrated(More)
BACKGROUND Many patients who experience bulimia nervosa (BN) and binge eating disorder (BED) find it hard to access evidence-based treatments. Rates of failure to enter outpatient services following initial assessment are high, as are dropout rates from specialist outpatient eating disorders services. AIMS To offer CD-Rom CBT, a cognitive-behavioural(More)