Some people are able to draw an object, match similar objects and describe the component parts but they fail to recognize the objects that they had just seen or drawn. Which of the following describes this phenomena?

Correct option is A

The correct answer is Associative Agnosia.
1. Associative agnosia is a condition in which individuals can perceive and describe the components of an object, such as its shape, size, and parts, but fail to recognize or identify the object as a whole. This condition is typically caused by damage to the temporal lobe of the brain, specifically the ventral stream of visual processing. In associative agnosia, the individual is able to draw and match objects but cannot associate them with their meaning or previous experience.
2. This phenomenon is related to a disconnect between perception and memory; the person is unable to link their visual perception of an object to their semantic knowledge of it.

Information Booster

Types of Agnosia

1.1. Agnosia is a disorder where individuals are unable to recognize or interpret sensory stimuli despite normal sensory functioning. It generally results from brain damage in areas involved in perception and recognition. There are several types of agnosia, each affecting a specific type of recognition.

1.2. Associative Agnosia
1.2.1. In associative agnosia, the individual can see the object clearly and can describe its components (shape, size, etc.), but cannot recognize or name the object. This condition often arises from damage to the temporal lobe (specifically the left ventral visual stream).
1.2.2. It is believed that associative agnosia occurs when there is a disruption in the link between visual perception and semantic memory, preventing the brain from matching the visual representation to stored knowledge of the object.

1.3. Apperceptive Agnosia
1.3.1. Apperceptive agnosia is characterized by the inability to perceive the whole object despite being able to identify its parts. Individuals with this condition may have difficulty recognizing objects due to impaired visual perception. They cannot integrate individual features of an object into a whole.
1.3.2. This type of agnosia typically results from damage to the occipital lobe or the posterior parietal cortex, areas responsible for visual integration and object recognition.

1.4. Visual Neglect
1.4.1. Visual neglect, also known as hemispatial neglect, is a condition where individuals fail to attend to stimuli in one half of their visual field, typically the left side, even though they are not blind. It is most often caused by damage to the right parietal lobe.
1.4.2. People with visual neglect might not recognize or be aware of objects on the neglected side of their environment, but they can still recognize objects if attention is focused on the non-neglected side.

1.5. Form Agnosia
1.5.1. Form agnosia refers to the inability to recognize the shape or form of objects. Individuals with form agnosia may have difficulty identifying objects based solely on their shape, even though other features such as color and size are perceivable.
1.5.2. This form of agnosia is typically associated with damage to the occipital lobe and the ventral stream of visual processing, which is responsible for recognizing object shapes and forms.