Synthesia

1. Synesthesia

Synesthesia is a condition in which a type of sensory stimulation evokes the insight of another sense. The most common types of synesthesia are grapheme-color synesthesia and when colors are associated with the days of the week.

http://www.britannica.com/EBchecked/topic/578457/synesthesia

http://en.wikipedia.org/wiki/File:Synesthesia.svg

2. grapheme-color synesthesia

This is a form of synesthesia in which an individual experiences colors after a perception of letters and numbers.

http://dictionary.sensagent.com/grapheme–color+synesthesia/en-en/

http://annarosekerr.com/blog/wp-content/uploads/2010/10/synesthesia-alphabet1.jpg

3. ordinal-linguistic personification

This is another form of synesthesia, in which ordered sequences, just like months, days, letters or ordinal numbers are associated with different types of personalities.

http://dictionary.sensagent.com/ordinal-linguistic%20personification%20%20/en-en/

http://newsimg.bbc.co.uk/media/images/46465000/gif/_46465226_synaesthesia466.gif

4. number-form synesthesia

This synesthesia is a mental map of numbers, in which involuntarily and automatically appears when someone with this conditions is experiencing or thinks of numbers.

http://dictionary.sensagent.com/number-form/en-en/

http://www.nature.com/nrn/journal/v6/n6/images/nrn1684-i1.gif

5. sound-color synesthesia

This type of synesthesia is when individuals would experience colors as a response to any type of music or sounds.

http://undacovabear.wordpress.com/2009/02/08/sound-colour-synesthesia/

http://www.bluecatsandchartreusekittens.com/voorkantomslag.jpg

6. lexical-gustatory synesthesia

Lexical-gustatory synesthesia is recorded as one of the most rare forms of synesthesia, in which vivid sensations of taste are evoked after spoken or written words and in some cases it includes temperature and texture

http://en.wikipedia.org/wiki/Lexical-gustatory_synesthesia

http://images.sciencedaily.com/2007/12/071226003600-large.jpg