Parsed here, as you will see, for "limited access" by left-handed “readers”, is a quick distillation of Leonard Shlain's latest book, “Leonardo's Brain” - especially, its chapter 13, "Emotions / Memories" (pp 133-141). Shlain states that this chapter “will focus on the brain organization of someone who is right-handed and left-brain-dominant” (pg.134). He later does consider and discuss the brain organization of the “8 to 12 percent” that are left-handed (right-brain dominate) in the final chapters ("spoiler alert": the brain of a left-handed asexual woman appears to be greatly out in the lead.) Here are your simplified left, right and center "bullet points"- - - -
Characteristics of right-brain (left hand): In fetus, right-brain (left hand) is already mature before left-brain (right hand) begins to develop.
Right-brain (left hand) is more familiar with needs and drives stemming from earlier stages of mammalian and primate evolution - the domain of sex and child raising – is non-verbal, having more in common with earlier animal modes of communication.
Right-brain (left hand) generates feeling-states which are non-logical and non-linear – examples, allow faith in God, understanding the subtleties of a joke, the rise to patriotic fervor. All feeling-states are nondiscursive and overwhelm the left-brain's new facility with words.
Right-brain (left hand) merges multiple determinants, emotions, meanings, sounds and images into holistic states. The right-brain (left hand) contributes metaphor to left-brain's abstract words.
Right-brain (left hand) have little volitional control and betray their own feelings though fidgeting, blushing or smirking.
Emotions predominately located in right-brain (ed: left hand) – fear, terror, love, hate, shame, disgust, envy, jealousy, ecstasy.
Right-brain (left hand) perceives world concretely without attempt to translate to words – this is the portal to the spiritual – entertains altered states without need of faith or logic. Dreaming occurs primarily in the right-brain (left hand).
Right-brain (left hand) is holistic – appreciates relationship of parts to the whole - assimilates images as instant gestalts – as examples: faces and music.
Right-brain (left hand) deciphers tone, inflection and nuance. It understands better - gestures, grimaces, cuddling, suckling, touching and body stance.
Right-brain (left hand) better at spatial relations and distance – skiing, dancing.
Additional notes from other chapters: Right-brain (left hand) “is aware of its connections to everything else” - “minor lobe merges a complex web of spirituality, intuitions, mysticism and pattern recognition to generate complex feelings.” (pg 90)
“Orgasm is a right-hemispheric function. Love is rooted in the right brain. Ecstasy is an emotion experienced at the right of the corpus callosum.” (pg 101)
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Characteristics of left-brain (right hand): Left-brain (right hand) – “innovative features” include – speech, motor activity, numeracy, abstractions – such as alphabets, ideograms, words, names and numbers. “Abstract thinking is the ability to process information without concrete images.”
Left-brain (right hand) range back and forth along the linear time of past, present and future – follows series of steps – sequencing rather than holistic gestalt.
Left-brain (right hand) analysis reduces everything to its component parts.
Left-brain (right hand) is doing and action, controls the vital act of willing.
Left-brain (right hand) controls the picking, throwing, tool making.
Left-brain's (right hand) only emotions are happiness, joy and cheerfulness.
Left-brain (right hand) knows the world through words and speech. Language and words are “the very essence of the action mode; with them, we abstract, discriminate, analyze and dissect the world.” Words are image substitutes. The left-brain builds concepts without resort to images.
Left-brain (right hand) follows the linear sequence of logic, the if/then syllogisms – which is the foundation of science, education, business and military strategy.
“The left lobe processes time and keeps track of dates. Only a (ed: right handed) human can experience, or even understand “birthdays” - left brain tracks only the discrete trees, but cannot see the entire forest.
Additional notes, Chapter 9: Left-brain (right hand) is the seat of ego and superego, is separate from the world – the “I” and “not-I”. (pg 90) – “sees the world from a survivalist's point of view.” (pg 176)
Leonard Shlain's books and life. Best review of book. Buy Shlain's "Leonardo's Brain".