PELA TOCA DO COELHO

Pela Universidade Do Porto

Inferindo as emoções do usuário pela face através de um sistema psicológico de codificação facial

This paper presents a computing system to infer anger, fear, disgust, surprise, joy, and sadness emotions from user’s facial expressions through a webcam. The emotion detection is based on a facial psychological system, the Facial Action Coding System (FACS), and uses machine learning algorithms for its execution. Experiments using this system reached 60% success in average, achieving a success...

Pan-hipopituitarismo causado pela granulomatose de Wegener

Wegener’s granulomatosis (WG) is a multi-system necrotizing granulomatous vasculitis which classically affects the upper respiratory tract, lungs and kidneys. Pituitary participation has been described in 24 patients in the literature to date. The aim of this article is to report a case of pituitary involvement in WG, and to present a literature review on this association. We present a female p...

RICHARD TYLER ( USA ) and CLAUDIA BARROS COELHO ( Brazil )

BACKGROUND: Subjective tinnitus is the perception of a sound in the absence of any physical source. It has been shown that tinnitus is associated with hyperactivity of the auditory cortices. Accompanying this hyperactivity, changes in non-auditory brain structures have also been reported. However, there have been no studies on the long-range information flow between these regions. RESULTS: Usin...

Regulation of WASP PIP2 Pipped By Toca-1?

Cdc42 is a key regulator of cell polarity and actin dynamics. One of its effectors, WASP, initiates the assembly of new actin filaments. In this issue of Cell, show that a previously unknown regulator named Toca-1 is required for Cdc42 to activate WASP. This discovery changes our picture of how small GTPases and multiple other signals converge to stimulate actin polymerization and cell motility.