Primate medial thalamus: Investigating its functions and interrelated neural systems for memory

Strokes and chronic alcoholism are damaging a small brain region called the medial thalamus, causing memory loss that is becoming more common with modern lifestyles. This project uses macaque monkeys—whose brains closely resemble human brains—to study exactly how the medial thalamus contributes to memory processing. The researcher is currently the only person in the world conducting this work in macaques. The problem is that while we know medial thalamus damage causes amnesia, we do not understand the specific neural mechanisms behind it. Without that understanding, diagnostic tools and rehabilitation methods for memory loss remain blunt instruments. This is a fundamental science project: it aims to map how the medial thalamus interacts with other memory-related brain systems, using cognitive tasks and experimental techniques that complement human studies. If successful, this research will not immediately change clinical practice. But it will provide the basic neural blueprint needed to develop targeted diagnostic tests for thalamic amnesia and to design rehabilitation strategies that work for both younger stroke patients and older adults with alcohol-related brain damage. Past fundamental research on brain structures like the hippocampus similarly laid the groundwork for today's memory assessments and therapies.