A case study of the cognitive and behavioral deficits of temporal lobe damage in herpes simplex encephalitis.

Doctors watched one man after herpes simplex encephalitis ate his left and right temporal lobes. They gave him a brand-new thinking test to see what skills were left and what were gone.

The test looked at language, memory, and daily living skills. It took only one hour and used real objects, not just paper questions.

The man could still talk in short sentences, but he forgot new words in under a minute. He also hit staff when they moved his belongings, showing quick rage.

The new test showed exactly which brain jobs were broken and which were spared. Old tests had missed these gaps.

Diemer et al. (2023) tracked kids with non-verbal learning disability for three years. Both studies use fine-grained tests to map changing skills, but K et al. did it once after injury while C et al. watched slow decline over time.

Howlin et al. (2006) found that extra words slipped into lists forecast memory loss in adults with Down syndrome. K et al. show the same kind of word slips right after brain infection, hinting the error type matters across diagnoses.

de Leeuw et al. (2024) profile language and behavior problems in children with 16p11.2 gene changes. Their mixed profiles look like the man in K et al., proving detailed testing is useful no matter the cause.

If you work with adults or kids after brain infection, stroke, or gene disorders, one quick object-based test can show you where to focus therapy. Use the results to write precise goals for language, memory, or anger management instead of guessing.