Final answer:
Patients with posterior parietal lesions cannot recognize faces, a condition known as prosopagnosia. The parietal lobe integrates visual information, essential for identifying faces. Damage to this area can also affect spatial orientation and sensory integration, leading to a range of perceptual deficits.
Step-by-step explanation:
Patients with posterior parietal lesions are likely to experience difficulties with sensory perception and the integration of sensory input, which can manifest as an inability to recognize faces, a condition known as prosopagnosia. Consequently, of the provided options, patients with lesions in the posterior parietal area would most accurately be described as being unable to b. Recognize faces. This is due to the role of the parietal lobe in interpreting visual and spatial information and integrating it with sensory data. Damage to this area can disrupt the processing of visual cues necessary for the complex task of face recognition.
The posterior parietal cortex is involved in a number of tasks, including spatial orientation and integrating different sensory inputs. This explains why damage to such regions can cause deficits in functions like two-point discrimination, stereognosis, and graphesthesia. Furthermore, the posterior parietal lobe plays a key role in double simultaneous stimulation, a process that involves the perception of stimuli on both sides of the body at the same time. Impairments in this area can result in unilateral neglect, where a person fails to recognize stimuli on one side of the body, often opposite to the side of the brain lesion.