Well-practiced motor skills like riding a bike are extremely stable memories that can be effortlessly recalled after years or decades. In contrast, a new study shows that changes to motor skill memories occurring over the course of a single practice session are not immediately stable, according to researchers.

We're all familiar with the old saying that you never forget how to ride a bike and perhaps personally familiar with riding off on a bike years after last putting pedals under your feet. This experience highlights the incredible stability possible for motor skill memories, especially those for well-practiced skills. However, the stability of the new motor memories formed on the shorter timescale of a single practice session has been under debate.

Sexual dysfunction in women can be linked to low resting heart rate variability, a finding that could help clinicians treat the condition, according to a study by psychologists from The University of Texas at Austin.

Heart rate variability (HRV) -- the variation in the time intervals between a person's consecutive heartbeats -- can indicate how well an individual responds to physiological and environmental changes. Low resting heart rate variability has been associated with several mental health conditions, such as depression, anxiety and alcohol dependence, as well as erectile dysfunction in men.

The inclusion of experimenters who are unlikely to become habitual users in e-cigarette prevalence studies is of 'questionable' value for monitoring population public health trends, finds research published online in the journal Tobacco Control.

A more valid approach, setting the threshold at a minimum of use on 6 out of the past 30 days, would eliminate many of those who are motivated primarily by curiosity and unlikely to become regular users, and it would provide a more accurate picture of use, say the researchers.

A telecommunications law academic in Australia has recommended for laws to be enacted criminalising the application of face recognition technology to visual images online that enable the identity of a person or people to be ascertained without their consent.

The December 26th 2004 Mw ~9.2 Indian Ocean earthquake, also known as the Sumatra-Andaman or Aceh-Andaman earthquake and generated massive, destructive tsunamis, clearly demonstrated the need for a better understanding of how frequently subduction zone earthquakes and tsunamis occur. 

Using subsidence stratigraphy, a team traced the different modes of coastal sedimentation over the course of time in the eastern Indian Ocean where relative sea-level change evolved from rapidly rising to static from 8,000 years ago to the present day.

It's not a surprise that doctors may believe people obsessed with food - be they nocebos or migrating from fad to fad - have a psychological condition rather than a gastrointestinal one. The gluten obsession, where 75 percent of people without celiac disease claim they have a reaction to gluten but do not, is an example.