A recognition disorder is not considered to be agnosia unless there is a lack of aphasia, dementia, or other generalized defect that affects any stage of the object recognition process, such as, deficiencies in intelligence, linguistic ability, memory, attention or sensory perception. Therefore, individuals must be assessed for language ability, auditory comprehension, fluency, repetition, praxis, and reading and writing. alt=Flowchart for Assessment of<unk>  Agnosias. Goals of clinical assessment of agnosia # Ruling out alternative conditions leading to the recognition impairment, such as, primary sensory disruption, dementia, aphasia, anomia, or unfamiliarity with the object category or elements. # Determination of the scope and specific nature of the recognition impairment. Including: :*Specific sensory modality :*Specific category of stimuli :*Specific conditions under which recognition is possible Testing Specialists, like ophthalmologists or audiologists, can test for perceptual abilities. Detailed testing is conducted, using specially formulated assessment materials, and referrals to neurological specialists is recommended to support a diagnosis via brain imaging or recording techniques. The separate stages of information processing in the object recognition model are often used to localize the processing level of the deficit. Testing usually consists of object identification and perception tasks including: * object-naming tasks * object categorization or figure matching * drawing or copying real objects or images or illustrations * unusual views tests * overlapping line drawings * partially degraded or fragmented image identification * face or feature analysis * fine line judgment * figure contour tracking *<unk>  object description * object-function miming * tactile ability tests (naming by touch) * auditory presentation identification Overlap with optic aphasia Sensory modality testing allows practitioners to assess for generalized versus specific deficits, distinguishing<unk>  agnosias from optic aphasia, which is a more generalized deficit in semantic knowledge for objects that spans multiple sensory modalities, indicating an impairment in the semantic representations themselves. Apperceptive vs.<unk>  The distinction between<unk>  agnosias can be assessed based on the individual's ability to copy simple line drawings, figure contour tracking, and figure matching. Apperceptive<unk>  agnostics fail at these tasks, while<unk><unk>  agnostics are able to perform normally, though their copying of images or words is often slavish, lacking originality or personal interpretation.
Associative visual agnosia
Apperceptive agnosia
Cortical visual impairment
Integrative agnosia
Visuospatial dysgnosia
Asomatognosia
Autotopagnosia
Auditory verbal agnosia