Chapter 13 Biological Basis Of Perceptions And Disorders Of Vision

Front 1

Achromatopsia

Back 1

Disorder where a person does not recognise colours

Front 2

Agnosia

Back 2

Disorders of vision that impairs object recognition

Front 3

Alexia

Back 3

Disorder of vision that impairs reading ability

Front 4

Cortical blindness

Back 4

First line of processing of visual input is disrupted and people experience this as blindness

Front 5

Cortical visual systems hypothesis

Back 5

Argues that there are two visual processing streams: one for locating objects and one for identifying

Front 6

Dissociations

Back 6

Different levels of performance between tasks

Front 7

Dorsal streams

Back 7

Pathway running from occipital to the parietal cortex and which is mainly concerned with perception of visual info

Front 8

Double dissociation

Back 8

Difference in performance between two tasks which is opposite

Front 9

Graceful degradation

Back 9

Functionality of a brain module is reduced in proportion to the extent of a brain lesion

Front 10

Ideo-motor apraxia

Back 10

Disorder of gestures

Front 11

Informational encapsulation

Back 11

Property of a cognitive module where it is isolated and operates in ignorance to rest of the cognitive system

Front 12

Lesion

Back 12

Damage to an area of the brain

Front 13

Modularity

Back 13

Way of thinking of mental processes as an interconnected system contained by borders

Front 14

Object recognition

Back 14

Synthesising the various elements of an object into work whole and being able to name that object

Front 15

Occipito temporal regions

Back 15

Regions of the brain involved in visual object recognition

Front 16

Ocular apraxia

Back 16

Disorder of not being able to control where you rest your gaze

Front 17

Optic apraxia

Back 17

Disorders of reaching for something when a person uses his sight as a guide of where to reach

Front 18

Primary visual areas

Back 18

Area of the Brian to which info travels almost directly to brain

Front 19

Regional specialisation

Back 19

when different parts of the brain do different things

Front 20

Secondary visual areas

Back 20

Sophisticated areas, dedicated to a range of of specialised visual processing tasks

Front 21

Sensory modalities

Back 21

Sensory abilities : hearing, smelling, seeing....

Front 22

Single dissociation

Back 22

Difference in performance between two tasks

Front 23

Spatial ability

Back 23

Ability to be aware of where something is

Front 24

Supra-ordinate level

Back 24

Greater category that an object can be categorised in

Front 25

Tertiary visual areas

Back 25

Highest level of the visual system that operates the most abstract aspects of visual processing

Front 26

Topographical disorientation

Back 26

Disorder of vision that impairs route finding

Front 27

Ventral stream

Back 27

Pathway running from occipital to infero temporal cortex, and is concerned with recognition of objects as members of familiar class

Front 28

Visual object agnosia

Back 28

Disorder where a person does not recognise all types of visual objects

Front 29

Visuo object agnosia

Back 29

Denial of part of a body

Front 30

Zooagnosia

Back 30

Disorder in the ability to recognise animals