An important aspect of human vision is the ability to attend to objects or events appearing in our peripheral vision without shifting our gaze. This way of effectively looking out of the corner of the minds eye is thought to be particularly important for alerting us to danger. Researchers have made the seemingly paradoxical discovery that even though eye movement itself is actually dispensable for such an attention shift, eye muscle function is nevertheless required for this ability to reflexively redirect ones attention. The new finding tests an important theory about brain function, and represents a remarkable example of the brains complex relationship with movement.
The ability to attend to objects or events that are not at the current centre of gaze (e.g., rapid movements which might signal danger) is referred to as the covert orienting of attention. This mechanism can be contrasted with the overt orienting of attention which typically involves the execution of an eye movement (saccade) intended to bring the object of interest into central vision.
In their new work, researchers Daniel Smith, Chris Rorden and Stephen Jackson of the University of Nottingham, UK, address an important question concerning the precise relationship between eye movements and the covert orienting of attention. While some have argued that covert orienting of attention and eye movements are independent of one another, other researchers have supported the so-called "premotor theory" of attention, which holds that covert attention is mediated by the same system that controls saccadic eye movements, and that a covert shift of attention is simply an unexecuted eye movement.
Heidi Hardman | EurekAlert!
Newly designed molecule binds nitrogen
23.02.2018 | Julius-Maximilians-Universität Würzburg
Atomic Design by Water
23.02.2018 | Max-Planck-Institut für Eisenforschung GmbH
A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.
In order to observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very...
A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.
By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
23.02.2018 | Physics and Astronomy
23.02.2018 | Health and Medicine
23.02.2018 | Physics and Astronomy