damage to the right cerebral hemisphere is most likely to reduce the ability to
Right hemisphere brain damage Patients with right hemisphere brain damage most commonly have difficulties with attention, perception, learning, memory, recognition and expression of emotion, and neglect.[3] Other frequently occurring, though slightly less common, deficits include reasoning and problem solving, awareness, and orientation.[3] It is also common for patients with right hemisphere damage to have a flat affect, lack of emotional expression, while speaking. Additionally, these patients commonly have difficulty recognizing other people's emotions when expressed through facial expressions and tone of voice.[2] Although these deficits alone may complicate therapy, the patient may also exhibit anosognosia, or ignorance of his or her impairments.[4][5] Due to possible anosognosia, it is common for patients to not become frustrated or upset when they are unable to complete tasks they were previously able to complete.[6]
Cerebral cortex The cerebral cortex is the largest region of the mammalian brain and plays a key role in memory, attention, perception, cognition, awareness, thought, language, and consciousness.[1] The cerebral cortex is the most anterior (rostral) brain region and consists of an outer zone of neural tissue called gray matter, which contains neuronal cell bodies. It is also divided into left and right cerebral hemispheres by the longitudinal fissure, but the two hemispheres are joined at the midline by the corpus callosum.[1]