I just found a couple of Flickr groups that have caught my imagination. The first is the ‘Brains‘ group for “fans of neuroscience, cognitive science, and other studies of how the mind and brain work”, and the second is ‘Deep Thoughts‘ which has some beautiful portraits of pensive people.
The Brains group is not without its striking images though, including this photo of ‘the apical tufts of 2 cortical layer V pyramidal cells’.
By combining the groups you can move from the level of biological action of the brain to the moment of intellectual discovery revealed on the face of the thinker.
Link to Flickr ‘Brains’ group.
Link to Flickr ‘Deep Thoughts’ group.
Mind Hacks 