cognitive psych Flashcards
perception - how many senses do we have?
5 - vision, audition, gustation, olfaction & somatoception
perception - give an example of 4 newly found external senses?
thermoreception, chronoreception, nociception & equillibrioception
perception - what is proprioception?
the sense of self-movement and body positioning
perception - describe visual perception
visual perception is not just the ability to detect light patterns, it is also the ability to determine surfaces in the environments.
perception - how is visual perception achieved
light is received in the visible spectrum reflected by objects in the environment and giving this empty information meaning.
this provides us with many survival functions as it is processed rapidly.
perception - outline object perception
the ability to determine what is and isn’t an object
this includes -> navigation, understanding objects in spatial areas and seeing danger.
perception - outline and explain Gestalt’s principles of perception
- Gestalt psych bags in 20th century
- says that objects are perceived as well organised pattern rather than separate and individual.
- it describes the organisation of single elements into a coherent whole which it greater than the sum of the parts.
- these laws are principles that the brain uses to organise a visual scene.
- bottom up and top down processing….
perception - what is bottom up processing in Gestalts principles
when sensory info is taken and assembled into what someone is seeing
perception - what is top-down processing
when pre-existing models are used to interpret sensory information.
may have seen it before.
perception - outline biological limitations of visual perception
- some people have visual issues which results in the need for glasses or corrective surgery.
- light and sensory info is processed slower/
- these individuals may have increased cone cells in the fovea and therefore colour sensitivity in these cells, there rod cells are therefore more sensitive to light.
perception - how eye movements impact perception and attention
(inc - 2 factors affecting attention)
- eye movements direct the fovea which improves vision of field.
- constant fixation of eyes and eye movement is controlled by ligaments and tendons known as Saccade.
- attention shifts precede eye movements
- two factors affect the deployment of attention -> top-down and stimulus-driven.
perception - outline the two factors affecting attention deployment
stimulus-driven -> attention is focused by flashing lights, bright object or moving ones.
top-down -> is focused now hat your looking for and what interests you.
perception - outline depth perception and ocular cues.
depth perception is how a brain determines the distance of an object, it uses ocular cues known as monocular and binocular cues.
for ocular cues:
- MONOCULAR - accommodation where the ones contracts when an object in near to the main focus
- BINOCULAR - convergence when the eyes turn inwards as something is close to us.
perception - outline and describe stereopsis in depth perception
this is where visual info is processed in the occipital lobe via LGN, spatial configuration is maintained and the image is upside down.
this is where the image is flipped, both visual fields project the images to the contralateral hemisphere, and the retinas have 2 images which are combined to create a coherent object.
perception - outline and describe what kinetic cues are in depth perception
(inc motion parallax, optic flow)
kinetic cues are visual features that provide insight as to the ditch of an object.
motion parallax - the difference in the info received by both eyes, i.e., closer objects move faster relative to stationary object in the back.
optic flow is the impression of visual info moving towards or away from us as we move. a position change caused displacement of the optic array.
perception - outline pictorial clues and the sub-parts
2D visual info like a photo can be depicted about distance and form a 3D image.
perception - pictorial cues - Perspective
where parallel lines converge at infinity, how something is seen
perception - pictorial cues - relative size
objects may be the same size but the one that is closer seems larger.
perception - pictorial cues - familiar size
the distance of an object seen everyday is seen relative to the size it is reflected on the retina
perception - pictorial cues - aerial perspective
light is scattered by the atmosphere, so further away may appear more blue and hazy which indicates the distance of it.
perception - pictorial cues - occlusion
this is when an object is blocked by something in front and is not always seen correctly.
perception - pictorial cues - texture gradient
things further away tend to appear much more densely packed.
perception - pictorial cues - elevation
object closer to the horizon are deemed as further away.
language - outline language briefly
- main way information is recorded and transmitted
- how laws are established
- sports use language to rely on codified rule
- an important medium of arts like literature.