Psychedelic Information Theory
Shamanism in the Age of Reason
Search Results : retina
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... that the patterns of connection between retina and striate cortex (henceforth referred to as V1)-the retinocortical map-and of neuronal circuits in V1, both local and lateral, determine their geometry. In the first part of the paper we show...
Crude cognitive schematic of waking consciousness
... The lag between the time an image hits our retina and the time you actually "see" the image in your mind is about 16 milliseconds, giving you a working visual frame-rate of about 60 frames per second. Anything that registers at this speed or l...
The Case Against the Spirit Model of Psychedelic Action
... light and create sound vibrations that the retina or cortex or neural network can perceive, these entities have to have some substrate in which to exist. Without resorting to alternate dimensions or quantum space or dark matter, the average sp...
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... limitation is the density and distribution of retina in the eye; 130 million photoreceptors feeding into 1.2 million optic projections, with a spatial compression ratio of roughly 100 to 1. Photoreceptors in the eye are distributed in rings with ...
Uncoiling the spiral: Maths and hallucinations
... is projected as a two-dimensional image on the retina of each eye, so what we see can also be treated as flat sheet: the visual field. Every point on this sheet can be pin-pointed by two coordinates, just like a point on a map, or a point on the f...
... by geometric forms originating in the retina and optic tract.1 Eidetic hallucinations are characterized by photographic images originating from the hippocampus and medial temporal lobe.2 There is also a third type of hallucination not cov...
... a sensation of light caused by excitation of the retina by mechanical or electrical means. Pressure phosphenes can be created by applying pressure to the eyeballs through closed eyelids; flicker phosphenes are created in response to stroboscopic pul...
Presynaptic uptake blockade hypothesis for LSD action at the lateral inhibitory synapse in Limulus
... of LSD are markedly reduced by bathing the retina in a medium high in Mg++ and low in Ca++; (c) very low concentrations of chlorimipramine, a putative uptake blocker of serotonin, appear to mimic actions of LSD both on eccentric cell firing ra...
... whose primary purpose is to focus light onto the retina. The retina contains receptor cells, rods and cones, which, when stimulated by light, send signals to the brain. These signals are subsequently interpreted as vision. Most of the receptors a...
The Control Interrupt Model of Psychedelic Action
... such as the layers of the cortex or the retina, fast inhibition is applied laterally to boost contrast discrimination in sensory detail; this is called lateral inhibition. Fast inhibition in the cortex can also be applied from the bottom-up...
Showing 1 to 11 of 11