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Current findings regarding altered visual orientation processing from MDMA use comes from research by White, Brown and Edwards (2013). [2] Their study sought to extend the results found in previous research, such as Maisini et al. (1990), [ 18 ] and investigate how MDMA affects visual processing in the occipital lobe.
Orientation columns are organized regions of neurons that are excited by visual line stimuli of varying angles. These columns are located in the primary visual cortex (V1) and span multiple cortical layers. The geometry of the orientation columns are arranged in slabs that are perpendicular to the surface of the primary visual cortex. [1] [2]
The brain pathway that orients visual attention to a stimulus is referred to as the orienting system.There are two main types of visual orientations, covert (exogenous) which occurs when a salient environmental change causes a shift in attention and overt (endogenous) which occurs when the individual makes a conscious decision to orient attention to a stimuli [1] During a covert orientation of ...
Any orientation detector in the human visual cortex is excited by a relatively narrow range of orientations (preferred orientations) and is inhibited by a much broader band. The presentation of a single line would be expected to produce a distribution of activity among the population of orientation detectors which is in favor of the stimulated ...
Visual short term memory is the capacity for holding a small amount of visual information in mind in an active, readily available state for a short period of time (usually no more than 30 seconds). Although visual short term memory is essential for the execution of a wide array of perceptual and cognitive functions, and is supported by an ...
Orientation selectivity is expressed by cells within the visual cortex, when such cells increase impulse or signal activity for specific oriented degree of lines or bars presented within the visual field. [1] Orientation selectivity can also be expressed by simple cells if the orientation of a stimulus is orthogonal to the preferred degree of ...
Visual processing is the brain's ability to use and interpret visual information from the world. ... and orientation. Journal of neurophysiology, 49(5), 1127–1147.
In cognitive psychology, visuospatial function refers to cognitive processes necessary to "identify, integrate, and analyze space and visual form, details, structure and spatial relations" in more than one dimension. [1] Visuospatial skills are needed for movement, depth and distance perception, and spatial navigation. [1]