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Unformatted text preview: Limbic System (Midbrain) Emotion Memory & Motivation INTERNAL Alan Shore PhD MAPPING FEELING STATES ARE MAPPED IN THE BRAIN SENSE? 6TH Among the ideas explored by recent researches are the following: Consciousness" is limited (5-9 bits of information). .SNAIL OF THE MIND Compared to Emotional & Unconscious thinking (limbic system) Solms 2002 RABBIT of the MIND We tend to be emotion based rather than logic based Emotion from the right brain underlies the left brain & conscious thinking But the left conscious brain can inhibit the emotional brain Frontal lobe: Rational and Conscious decision-maker Limbic system: Emotion, which can be unconscious -Mark Solms Limbic System (Emotion)
Amygdala aggression fear Limbic System (emotion)
Nucleus Accumbens pleasure center Limbic System: Hypothalamus Emotion Hypothalamus: Sexual Behavior Controls endocrine system **Sleep **Body temperature **Hunger & Thirst Endocrine system The is an integrated system of organs which involve the release hormones Regulating: Metabolism growth & development tissue function and plays a part also in mood Major endocrine glands: Male= left Female =Right 1. Pineal gland 2. Pituitary gland 3. Thyroid gland 4. Thymus 5. Adrenal gland 6. Pancreas 7. Ovary 8. Testes Hormone: Vasopressin Swedish researchers Male 2 alleles of a certain gene prevents bonding of vasopressin hormone results in Vasopressin pair bonds Family man Travelling man Hypothalamus (cont'd) Damage to hypothalamus can cause inappropriate emotional reactions (e.g., uncontrollable laughter) Hypothalamus (cont'd) A nucleus within hypothalamus is involved in: Seasonal Affective Disorder lack of sun can cause sadness Hippocampus: Memory's index Pain Overlap Theory Social Pain Attachment was so important that it mapped on the neural pain matrix "The loss of social bonds can unleash the most profound forms of human pain and suffering"
e.g., "Broken Heart"
Eisenberger et al., 2003 Lack of Memory The hormone CORTISOL is released following stress. A significant trauma can release a lot of cortisol which can: Weaken the formation of conscious memory of the trauma, so you really can't remember as much Strengthen unconscious emotional/associational memory (which can effect us but can never become conscious) The more cortex an animal has... The more capacity for learning, thinking & being adaptable Cerebral Cortex Information processing Foresight `Forebrain' **more than 80% of brain's weight Cerebral Cortex (cont'd) 1/8 inch sheet of cells composed of billions of neurons. 100 trillion synaptic connections Cerebral Cortex & Information Processing Frontal Lobe: major portion of cortex
Pre-Frontal Cortex Abstract thinking planning ability decision making self awareness Judgment Frontal Lobe (cont'd) Premotor precise control of: fingers Lips jaw damage writing will cause problems with speech & Parietal Lobe Body Sensations Temperature Pain Pressure Parietal Lobe (cont'd) Electric stimulation--feel warmth, tingling, other sensations in body Occipital Lobe
Vision Visual perception recognition visual memory Occipital Lobe (cont'd)
Damage inability to recognize familiar objects visual hallucinations cortical blindness Occipital Lobe (cont'd) Left damage: inability to see more than one thing or one aspect of an object at a time Damage at juncture of occipital, temporal, & parietal lobes would cause inability to recognize familiar faces. Temporal Lobe Hearing Auditory cortex Temporal Lobe (cont'd) Damage Auditory hallucinations Severe deficits in language comprehension and production. Amnesia Corpus Callosum The large band of neural fibers connecting the two brain hemispheres and carrying messages between them Left vs Right Left and Right brain Split brain patients Michael Gazzniga: The Left brain is the interpreter dissonance Cognitive The right brain (emotions) does much of its processing and remembering unconsciously language based (logic) left brain is consistent with his idea of the conscious Alan Shore The DANIEL GOLEMAN: "Vital lies, simple truths" Self deception Confabulations from brain damage pts Gazanaga: isolated mechanism in split brain pts, interpretation made left brain interpreter: to make sense ...
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