Patient Case: A 70-year-old right-handed woman is brought to the emergency department with sudden-onset left-sided weakness. Her family reports that she has been ignoring objects on her left side, even when eating or brushing her hair. On examination, she has left-sided hemiparesis and hemisensory loss. When asked to draw a clock, she only fills in the numbers on the right side. A CT scan confirms an infarction in the right MCA territory. Question: What is the most likely cognitive deficit in this patient?