What is somatosensory agnosia?
Astereognosis. Also known as somatosensory agnosia, it is connected to tactile sense—that is, touch. Patient finds it difficult to recognize objects by touch based on its texture, size and weight. However, they may be able to describe it verbally or recognize same kind of objects from pictures or draw pictures of them.
What is the difference between agnosia and aphasia?
Persons with Wernicke’s aphasia also have troubles understanding speech but the underlying causes are different from those in agnosia and usually they recognize speech sounds as such (see Wernicke’s aphasia). In visual agnosia, patients cannot recognize objects.
What are the three types of agnosia?
Types of Agnosia Hearing (auditory agnosia—the inability to identify objects through sound such as a ringing telephone) Taste (gustatory agnosia) Smell (olfactory agnosia)
What causes somatosensory agnosia?
Etiology. Agnosia happens when there is brain damage along pathways that connect primary sensory processing areas. These areas typically include the posterior parietal cortex and occipitotemporal regions.
What is apraxia and agnosia?
* agnosia: inability to recognize people, objects, sounds, shapes, or smells. * apraxia: inability to have purposeful body movements.
What are the types of apraxia?
Different types of apraxia affect the body in slightly different ways:
- Limb-kinetic apraxia.
- Ideomotor apraxia.
- Conceptual apraxia.
- Ideational apraxia.
- Buccofacial apraxia.
- Constructional apraxia.
- Oculomotor apraxia.
- Verbal apraxia.
What causes constructional apraxia?
Constructional apraxia, typically caused by a lesion in the right cerebral hemisphere, is the inability to construct elements in the correct fashion to form a meaningful whole—e.g., being unable to build a structure with blocks or to copy a design.