motioninduced

Motioninduced is a broad term used to describe phenomena that arise from motion, whether of an observer, an object, or the surrounding medium. It is not a single theory but an umbrella for diverse effects encountered across disciplines such as psychology, imaging, physics, and engineering.

In perception and cognitive science, motion-induced phenomena include motion-induced blindness (MIB), a robust perceptual effect in which salient stationary objects can disappear from conscious awareness when overlaid by a moving pattern. MIB depends on factors such as target salience, background speed, attention, and luminance. It is widely studied to understand visual awareness, attention, and perceptual processing.

In imaging and photography, motion can degrade signal or image quality. Motion artifacts in medical imaging modalities like MRI, CT, and PET arise from patient movement and can compromise diagnostic accuracy. Motion blur in photographs results from exposure times that exceed the speed of the subject’s motion. Mitigation strategies include faster acquisition or shutter speeds, physical stabilization, motion correction algorithms, gating techniques, and instruction or coaching of subjects.

In physics and engineering, motion in fields or media can produce measurable signals. Motional electromotive force, for example, occurs when a conductor moves through a magnetic field, in accordance with Faraday’s law. Relative motion also causes Doppler shifts in waves, a principle utilized in radar, ultrasound, astronomy, and spectroscopy. Movement-related effects underpin many sensors and measurement devices.

In fluids and aerodynamics, relative motion between bodies and a medium can generate drag, lift, and turbulence, depending on flow conditions and geometry.