Deep learning for automatic facial detection and recognition in Japanese macaques: illuminating social networks.

Individual identification plays a pivotal role in ecology and ethology, notably as a tool for complex social structures understanding. However, traditional identification methods often involve invasive physical tags and can prove both disruptive for animals and time-intensive for researchers. In recent years, the integration of deep learning in research has offered new methodological perspectives through the automatisation of complex tasks.

Social pressure drives "conversational rules" in great apes.

In the last decade, two hypotheses, one on the evolution of animal vocal communication in general and the other on the origins of human language, have gained ground. The first hypothesis argues that the complexity of communication co-evolved with the complexity of sociality. Species forming larger groups with complex social networks have more elaborate vocal repertoires.

A He vector zero-field optically pumped magnetometer operated in the Earth-field.

Low intrinsic noise, high bandwidth, and high accuracy vector magnetometers are key components for many ground or space geophysical applications. Here, we report the design and the test of a He vector optically pumped magnetometer specifically dedicated to these needs. It is based on a parametric resonance magnetometer architecture operated in the Earth magnetic field with closed-loop compensation of the three components of the magnetic field.

A Review of Extensor Hallucis Longus Variants Featuring a Novel Extensor Primi Internodii Hallucis Muscle Merging With Extensor Hallucis Brevis.

The extensor hallucis longus (EHL) muscle/tendon complex has been used in a variety of tendon transfer and tenodesis surgeries to correct iatrogenic hallux varus deformity, equinovarus foot deformity, clawed hallux associated with a cavus foot, and dynamic hyperextension of the hallux and, even, to prevent pedal imbalance after transmetatarsal amputation. Although it is usually considered a unipennate muscle inserting into the dorsum of the base of the distal phalanx of the hallux, a vast majority of EHL muscles possess ≥1 accessory tendinous slips that insert into other neighboring bones, muscles, or tendons, which can complicate these surgeries. The present report reviewed the reported data on EHL variants and describe a new variant, in which the tendons of the extensor primi internodii hallucis muscle of Wood and extensor hallucis brevis muscle merged together proximal to the tarsometatarsal (Lisfranc) joint, a site of rupture for extensor tendons of the foot.

[Traumatic myocardial infarct].

Two cases of traumatic, closed chest, myocardial infarction in two young patients, aged 18 and 19 years respectively, are reported. They illustrate the two possible physiopathological mechanisms of this affection: in the first case, myocardial contusion after thoraco-abdominal trauma by crushing, probably complicated by a subendocardial tear of the inferior wall of the left ventricle, with a spontaneous favourable outcome; in the second case, a transmural myocardial infarction was observed secondary to a coronary lesion (? tearing of the adventitia of the left anterior descending artery) complicated by the early development of a large antero-apical aneurysm. Haemodynamic and arrhythmic complications necessitated infarctectomy and aorto coronary bypass surgery on the 35th day.

[Systemic arterial spasms. Ergotamine tartrate].

The problem of the toxic effects of ergotism is raised by two cases of acute lower limb ischaemia observed in young patients. Although commonly encountered up to the 20th century, the problem is now reappearing sporadically from iatrogenic causes. The clinical features and treatment of ergotism are discussed.

[Myocardial infarct in 2 stages].

The two-step myocardial infarction is defined by a peculiar course: the initial stage is a temporary rudimentary infarction, the late stage a typical transmural necrosis, separated by a free interval of a variable duration. A coronary arteriography undertaken when the recurrence starts might eventually lead to recommend an emergency operation: two-step myocardial infarction might represent one of the best indications for emergency aorta-to-coronary artyery by-pass operation.