Which condition is characterized by the loss of the ability to interpret sensations?

The condition characterized by the loss of the ability to interpret sensations is agnosia. This neurological disorder involves a difficulty in recognizing and processing sensory information, despite having intact sensory functions. Individuals with agnosia may struggle to identify objects, sounds, or faces, which signifies that while they can perceive these stimuli, their brain is unable to assign meaning to them.

In contrast, apraxia refers to a difficulty in executing purposeful movements, dementia involves a decline in cognitive function affecting memory and reasoning, and delirium is an acute, often reversible state of confusion and altered consciousness. Each of these conditions impacts behavior or cognition differently, but agnosia specifically targets the interpretation aspect of sensing, making it the most accurate choice for this question.