Hidden in plain sight: the (other) danger of COVID-19.

The Novel Coronavirus disease (COVID-19) first emerged in Wuhan province, China, in late November 2019 and changed public healthcare perception. It has caused a significant decline in attendance to outpatient clinics. However, other diseases have not stopped, including malignant melanoma.

Widespread osteoblastic metastases and marked elevation of CA19-9 as a presentation of signet ring cell gastric carcinoma.

Widespread osteoblastic metastases, as well as marked elevations of CA19-9 and carcino-embryonic antigen (CEA), are the initial manifestations of gastric signet ring cell carcinoma. CT Imaging revealed diffuse sclerotic metastases in the axial skeleton. It was only following gastric biopsy that the primary site of metastatic bone tumor was identified.

The neuronal basis of long-term sensorimotor learning.

The brain has a remarkable ability to learn and adjust behavior. For instance, the brain can adjust muscle activation to cope with changes in the environment. However, the neuronal mechanisms behind this adaptation are not clear.

Differences in context and feedback result in different trajectories and adaptation strategies in reaching.

Computational models of motor control have often explained the straightness of horizontal planar reaching movements as a consequence of optimal control. Departure from rectilinearity is thus regarded as sub-optimal. Here we examine if subjects may instead select to make curved trajectories following adaptation to force fields and visuomotor rotations.