The parietal lobes can be divided into two functional regions. One involves sensation and perception and the other is concerned with integrating sensory input, primarily with the visual system. The first function integrates sensory information to form a single perception (cognition). The second function constructs a spatial coordinate system to represent the world around us. Individuals with damage to the parietal lobes often show striking deficits, such as abnormalities in body image and spatial relations (Kandel, Schwartz & Jessel, 1991).
- Location for visual attention.
- Location for touch perception.
- Goal directed voluntary movements.
- Manipulation of objects.
- Integration of different senses that allows for understanding a single concept.
- Inability to attend to more than one object at a time.
- Inability to name an object (Anomia).
- Inability to locate the words for writing (Agraphia).
- Problems with reading (Alexia).
- Difficulty with drawing objects.
- Difficulty in distinguishing left from right.
- Difficulty with doing mathematics (Dyscalculia).
- Lack of awareness of certain body parts and/or surrounding space (Apraxia) that leads to difficulties in self-care.
- Inability to focus visual attention.
- Difficulties with eye and hand coordination.