behavioural neuro lecture 15 - emotion

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8 Terms

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autonomic nervous system (visceral)

regulates internal organs

2 branches: sympathetic and parasympathetic

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somatic nervous system

involved in interactions with the external world

controls voluntary movement

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sympathetic control pathway 

  1. signal leaves lateral horn of spinal cord 

  2. reaches sympathetic ganglion (releases acetylcholine & activates next neuron) 

  3. next neuron travels to target organ (releases norepinephrine) 

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parasympathetic control pathway 

  1. signal leaves brainstem via cranial nerve (vagus) 

  2. travels almost all the way to organ 

  3. synapses to parasympathetic ganglion next to organ 

  4. releases acetylcholine 

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amygdala

needed for fear, alertness, and defensive movements

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insular cortex

emotional awareness and associations

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ventral medial prefrontal cortex 

regulates emotions according to context/expectations 

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