The (freely downloadable) book Emotional Cartography - Technologies of the Self  is a collection of essays from artists, designers, psycho-geographers, cultural researchers, futurologists and neuroscientists, brought together by Christian Nold, to explore the political, social and cultural implications of visualizing intimate biometric data and emotional experiences using technology. The theme of this collection of essays is to investigate the apparent desire for technologies to map emotion, using a variety of different approaches.

Probably the best known emotion maps are the ones resulting Bio Mapping project, a community mapping project in which the Galvanic Skin Response (GSR), a simple indicator of the emotional arousal, is recorded in conjunction with one's geographical location. By combining the emotional responses of over 1,500 people over a period of 4 years, several "Emotion Maps" were generated of the city in which the participants roamed around.

Interspersed throughout the book, are the images of the printed Emotion Maps as well as photos of the participatory process. As mentioned before, the book can be freely downloaded and includes some compelling examples of mapping the subjective views of our daily experiences in a visual form.

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