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During the 32 years that I spent in Computer Science at The University of Iowa, between 1970 and 2002, my research focused on human information processing. I studied a variety of topics, including human memory, natural language processing, human vision, visual imagery, and human control of movement. I published many of the results of my investigations in The Cerebral Computer, published by Lawrence Erlbaum Associated, Inc. in 1987. My brain-function blog appears here. I now enjoy photography and periodically show recent pictures here.

Linda and I spent Sunday afternoon at Plum Island (Parker River National Wildlife Reservation) and took these pictures (among others). On Thursday we were in Boston and I took a few more pictures at Back Bay Fens across the street from the Gardner Museum.

Plum Island

1. Children writing in the sand

2. A surfer in the waves

3. Red berries

4. Surfers (by Linda)

5. Fishing in the surf (by Linda)

6. Jumping on the rocks (by Linda)

7. Double-crested Cormorants

8. A Common Eider fending off

a juvenile Herring Gull.

9. Great Black-backed Gull

10. Herring Gull

11. Lesser Yellowlegs

12. Sanderling

13. Sanderling

Back Bay Fens, Boston

14. Canada Goose

15. Chestnuts

16. Berries

17. Reed

18. Gray Squirrel

19. Canada Goose

20. Canada Goose