Retro Circles

Sensation and Perception

BY: Vyel Brodit and Cylene SeraficaFree Powerpoint TemplatesPage #The Big DifferencePerception and Sensation are NEVER the sameSensation is the transduction of physical stimuli into neural signalPerception is translation of neural signal intomeaningFree Powerpoint TemplatesPage #Sensation2

sensationLets sense things up!Free Powerpoint TemplatesPage #Sensation DisordersDizzinessAn imprecise term which may refer to a sense of spatial disorientation, motion of the environment, or lightheadedness.*Vertigo, a sensation that the environment is moving when it is not, may be of either central

Free Powerpoint TemplatesPage #Hearing DisordersConditions that impair the transmission of auditory impulses.*Hearing loss is any degree of impairment of the ability to apprehend sound. It is majorly caused by ageing or exposure to noise.

Olfaction DisordersAbsence of the sense of smell.Most people who develop a smell disorder have recently experienced an illness or an injury. Common triggers for smell disorders are colds and other upper respiratory infections and head injuries.

Free Powerpoint TemplatesPage #Taste DisordersIn ability to taste substances.a reduced ability to taste sweet, sour, bitter, and salty a condition calledhypogeusia.Some people cannot detect any tastes, which is calledageusia.Dysgeusia is a condition in which a foul, salty, rancid, or metallic taste sensation will persist in the mouth.Vision DisorderVisual impairments limiting one or more of the basic functions of the eye.

Free Powerpoint TemplatesPage #PerceptionPerceive me no moreFree Powerpoint TemplatesPage #The Gestalt Principles

The explanation behind why we see things as what they are.

Free Powerpoint TemplatesPage #Gestaltis a psychology term which means "unified whole". It refers to theories ofvisual perceptiondeveloped by German psychologists in the 1920s. These theories attempt to describe how people tend to organize visual elements into groupsorunified wholeswhen certain principles areapplied.

Free Powerpoint TemplatesPage #SimilaritySimilarityoccurs whenobjects look similarto one another. People often perceive them as a group or pattern.

Free Powerpoint TemplatesPage #When similarity occurs, an object can be emphasised if it isdissimilarto the others. This is calledanomally.

Free Powerpoint TemplatesPage #ContinuationContinuation occurs when the eye is compelled tomove throughone object andcontinueto another object.

Free Powerpoint TemplatesPage #ClosureClosureoccurs when an object isincompleteor a space is notcompletely enclosed. If enough of the shape is indicated, people percieve the whole by filling in the missing infomation

Free Powerpoint TemplatesPage #ProximityProximityoccurs when elements are placed close together. They tend to be perceived as a group

Free Powerpoint TemplatesPage #FigureThe word above isclearly perceivedas figure with the surrounding white space ground.

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Free Powerpoint TemplatesPage #Case FilesWhat we may perceive as such may not what it may really be. . . . Free Powerpoint TemplatesPage #

Alice in Wonderland SyndromeAlice in Wonderland Syndrome (AIWS or AWS) describes a set of symptoms, the most famous of which are:Alteration of body image: the sizes of parts of the body are perceived incorrectly.Alteration of visual perception: the sizes of external objects are perceived incorrectly.Most reports are about children experiencing AIWS symptoms, though many people experience it in later life. Many people say they had AIWS symptoms as a child, but 'grew out' of them around their teens.The most common time to experience AIWS symptoms is at night.

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Agnosia Agnosia is a perceptual disorder in which sensation is preserved but the ability to recognise a stimulus or know its meaning is lost. Agnosia means without knowledge. Patients with agnosia cannot understand or recognise what they see, hear or feel.Free Powerpoint TemplatesPage #Apraxiais the loss of ability to perform certain complex movement tasksTypes of Apraxia:Ideomotor apraxia which is the inability to make gestures, can affect daily activities such as being able to hammer a nail, making symbolic hand gestures (waving goodbye), using a toothbrush, pretending to drive a car, or combing hair.Free Powerpoint TemplatesPage #Verbal apraxia or Dyspraxia, is a speech disorder in which a person has trouble saying what he or she wants to say correctly and consistently. It is not due to weakness or paralysis of the speech muscles.Buccofacial apraxiaI impaired ability to perform learned, skilled facial (nonspeech) movements.

Free Powerpoint TemplatesPage #AchromatopsiaIs the inability to see any colour. It is an extremely rare and serious form of colourblindness. Statistics report that this condition affects only one person in about 33,000.

Free Powerpoint TemplatesPage #AchromatopsiaThe American Association for Pediatric Ophthalmology (2008) states that on in every 40,000 children globally are born with this disorder and the color blindness is a result of an unbalanced distribution of the function red, green, and blue cones in the retina. However, many people are not born with this perception disability; rather it occurs from brain lesions or a stroke.Free Powerpoint TemplatesPage #