Perception Collection (page 2)

Waterfalls, During The Autumn, Glenoe Co Antrim

Ugliness and Beauty from The Complete Works of Beranger, 1836

Sensory homunculus C017 / 6826
Model of a sensory homunculus. Parts of the body are sized according to how much space the brain gives to processing sensory information about that part of the body

Ehrenstein illusion, square in circles
Ehrensteins illusion - a square in concentric circles. This is one of a number of illusions studied by Walter Ehrenstein. The sides of a square placed inside concentric circles appear to curve

Light and shade
Three Leonardo da Vinci sketches to illustrate linear perspective and light and shade.The upper diagram shows the light from three luminous bodies being projected on to a surface after passing

ESP, sending and receiving a telepathic message Date: 1900

Fortuna Niche 1498 Pen greenish brown ink 12 13 / 16 x 4 11 / 16
Artokoloro

Cross section of human eye

Allegory of perception, Jan Saenredam, Johannes Janssonius, 1595 - 1600

The progression of romance in five senses - French Style - from initial sighting to the bedroom in five simple steps! Seeing - Hearing - Smelling - Touching and... Tasting! Date: circa 1910s

Rockport, Massachusetts, USA, kayaks in harbor along Bearskin Neck

Hypnosis: Introvision (power of looking into a body) The most practical and valuable aspect of supersensuous perception, is known as introvision Patient, seated right, with introvisional subject

Headache, conceptual artwork F006 / 8693
Headache, conceptual computer artwork

Pain pathways, artwork
Pain pathways, computer artwork. The heat of the candle is detected by nociceptors (special sensory nerve endings) in the finger

Hearing perception, conceptual artwork C013 / 9458
Hearing perception. Conceptual artwork of a piano key (right) blurring into two. This represents the phenomenon where a single auditory stimulus is heard as two separate sounds or tones

Anorexia, conceptual artwork
Anorexia. Conceptual artwork of a stylised figure looking at its distorted reflection in a full-length mirror. This represents the distorted perceptions thought to be one cause of body image issues

Hearing damage, conceptual artwork
Hearing damage. Conceptual artwork of a man with distorted sound waves (green) entering his ears, with a volume-indicating dial (volume unit meter) in place of his mouth

Impossible shape, computer artwork

Scintillating grid illusion. This illusion, based on the Hermann grid, was created in 1994. When the grid is observed, the white dots at the intersection of the grey lines appear to scintillate

Square illusion - subdivision leads to apparent enlargement. There are three squares of identical area. However, the middle square appears to be wider than it is tall

Muller-Lyer illusion. The two lines with arrows at each end appear to be different lengths on the left. In fact they are the same length

Impossible rectangle. This is an impossible object - one that can be drawn in 2 dimensions but not created

Illusory contours forming circles. This illusion demonstrates the false perception of areas of increased brightness. Lines are apparently joined to bright circles. In fact no such circles exist

Freemish crate. This representation of an impossible cube is based upon the standard 2- dimensional depiction of a cube, but with some of the edges crossing in a way that could not be achieved in 3

Jastrow illusion. The bottom shape appears to be larger than the top shape. They are actually identical

Circle in a square illusion. The two red circles in the image are the same size. However, the one inside a blue square looks larger than the one enclosing a blue square

Hering illusion. This illusion was created by the physiologist Edward Hering in the 19th century. It exploits the brains understanding of perspective to fool it into thinking that the two horizontal

Framing colour illusion
Framing colours illusion. Black borders around colours enhance their brightness and prevent clashing. The colours in the pattern on the left appear to be brighter and bolder than those on the right

Poggendorff illusion. The two red lines crossing the blue bar are colinear. Many people see them as being offset. There are still no satisfactory explanations as to why this should be the case

Three arc illusion. The three arcs shown give the impression of belonging to circles of increasing radius when viewed from top to bottom. They actually come from circles of the same radius

Square illusion - orientation changes perception of size. The two squares are identical. However, the one on the left appears larger because it has been rotated through 45 degrees

Impossible trident. This uses the fact that a rectangular bar can be represented in 2 dimensions by 3 lines, whereas a cylinder requires 2. So we have 3 cylinders blending into 2 rectangular bars

Kanizsa triangle. This image appears to depict a solid triangle overlaying another triangle. This triangle looks brighter than the background. In fact there is no triangle

Delboeuf illusion. An illusion created by the Belgian philosopher Franz Joseph Delboeuf. The two red circles on the left have the same diameter, as do the two red circles on the right

Computer artwork of an impossible triangle
Impossible triangle. Abstract computer artwork of a triangle, made from 3 sections of tower block, which would be impossible to construct because it breaks the laws of artistic perspective

Angle illusion. The red angle marked on the left appears to be larger than the red angle on the right. In fact they are the same size

Square illusion - vertical lines appear longer
Square illusion. The shape on the right hand side is a square whilst the one on the left, which is slightly shorter, is not. However many people believe it to be the other way round

Orbison illusion. Both the rectangle surrounding the pattern and the perfect square within the pattern appear to be distorted

Irradiation illusion. The white square against a black background on the left appears to be larger than the black square against a white background on the right. They are actually the same size

Cafe wall illusion. This illusion is so named because it was first noticed on a tiled wall in a Bristol cafe. The pattern in the image appears to show sloping grey lines between the black

Simultaneous contrast example. The green squares look brighter on the left, where they are in yellow bands, compared to the right, where they are in blue bands

Hermann-Hering illusion
Hermann grid illusion. The intersections of the white horizontal and vertical lines in this image appear to be grey. But when looked at directly they are clearly white

Penrose stairway. This is an impossible figure created by the physicist Roger Penrose and used by M C Escher in his illustration " Ascending and Descending"

Ehrenstein illusion - illusory contours forming circles. Created in 1954 by the psychologist Walter Ehrenstein, this illusion demonstrates the false perception of areas of increased brightness

Gate control theory of pain, artwork
Gate control theory of pain. Computer artwork of the neural circuit diagram used to represent the gate control theory of pain

Impossible figure, artwork
Impossible figure. Computer artwork of a mug on a piece of paper, both with impossible figures drawn on them. Impossible figures are objects that can be drawn but not created

Optical illusion. This illusion demonstrates that the perception of rotation can vary with the stimulus applied and the way in which the illusion is observed

1649 Rene Descartes portrait philosopher
Rene Descartes, French mathematician and philosopher (31st March 1596 - 11 February 1650). 1835 Steel engraving in " The Gallery of Portraits" by W

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"Perception: Unveiling the Intricate Tapestry of Our Minds" Step into a world where reality dances with illusion, and perception reigns supreme. From the enigmatic Rorschach Inkblot Test to the captivating Sensory Homunculus, our minds unravel mysteries hidden within. Behold the Phrenological Head, a scrap of history that once sought to map our thoughts onto physical contours. Yet, it reminds us that perception is not confined to mere anatomy but extends beyond tangible boundaries. Marvel at the Hollow-Face Illusion artwork, where faces deceive as they appear convex instead of concave. It challenges our visual senses and beckons us to question what we truly see. Delve into the intricate diagram of the inner ear, revealing its auditory canal, eardrum, semicircular canals – conduits for balance – cochlea nerve and eustachian tube. Perception intertwines with sound as vibrations transform into meaningful melodies within our minds. Witness George Berkeley's wisdom unfold before your eyes; this Irish philosopher questioned whether objects exist without being perceived. He invites us to ponder how much of reality lies in our own perceptions. Return to the mesmerizing Rorschach Inkblot Test; ink patterns mirror fragments of ourselves back at us. They become mirrors through which we explore our innermost thoughts and emotions. Challenge your senses with the Goblet Illusion; two profiles merge seamlessly into one chalice or vice versa. It showcases how they are shift effortlessly between multiple interpretations. Ascend Penrose Stairs' artistic creation; an optical paradox defying logic as steps lead endlessly upwards or downwards in an impossible loop. Perception confronts reason here, urging us to question what seems impossible yet appears so real. Encounter Ouchi Illusion's unsettling embrace; hands intertwine in a disconcerting manner challenging spatial awareness itself. Our brains grapple with conflicting signals from sight and touch - perception becomes a battleground. Finally, gaze upon the Impossible Triangle artwork.