fMRI Predicts Memory Decline After Temporal Lobe Surgery
Author Information
Author(s): Powell H W R, Richardson M P, Symms M R, Boulby P A, Thompson P J, Duncan J S, Koepp M J
Primary Institution: University College London
Hypothesis
Greater ipsilateral fMRI activation would be associated with greater verbal memory decline following ATLR resection on the language dominant side and greater non-verbal memory decline following non-dominant ATLR.
Conclusion
Preoperative memory fMRI may be a useful predictor of postoperative memory change following anterior temporal lobe resection.
Supporting Evidence
- Greater ipsilateral fMRI activation predicted declines in both verbal and non-verbal memory following ATLR.
- Activation in the ipsilateral hippocampus was predictive of postoperative memory change.
- Patients with better preoperative memory performance had a greater risk of memory decline.
Takeaway
Doctors can use brain scans before surgery to guess how much a patient's memory might get worse after surgery.
Methodology
15 patients with unilateral TLE underwent fMRI memory tasks before ATLR, and their memory performance was assessed pre- and post-surgery.
Limitations
The sample size is small and may not account for other factors affecting memory decline.
Participant Demographics
Median age 36 years, 7 females, all fluent English speakers.
Statistical Information
P-Value
p=0.001 for verbal learning change
Confidence Interval
80% confidence interval
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website