Alphabet’s impact on cognition and culture has been covered by many scholars. A few books that deal with are The Spell of the Sensuous and The Alphabet Versus the Goddess. To learn about the impact of print on society, you can check out the Gutenberg Galaxy by McLuhan.
Autoamputate: to read McLuhans’s discussion of this concept, refer to “The Gadget Lover: Narcissus as Narcosis” section of the Understanding Media.
Creeping cycle of desensitization is explored in Mass Communication Theories: Explaining Origins, Processes, and Effects.
Languaculture was coined by Michael Agar in Language Shock: Understanding the culture of conversation.
Right/Left brain: McLuhan covers this extensively in The Global Village: Transformations in World Life and Media in the 21st Century (Communication & Society), but it’s a little outdated. For more recent research, look into Iain McGilchrist‘s The Master and his Emissary.
Sean Cubitt reference comes from his book, EcoMedia (Contemporary Cinema 1) (Contemporary Cinema S.).
One Laptop Per Child ad discussed in the book