New version page

U-M PSYCH 112 - Neurocomputation (Why Neurons)

Type: Lecture Note
Pages: 2

This preview shows page 1 out of 2 pages.

View Full Document
View Full Document

End of preview. Want to read all 2 pages?

Upload your study docs or become a GradeBuddy member to access this document.

View Full Document
Unformatted text preview:

Lecture 6I. Information- A mathematical theory of communication.Needs constant investment of energy.II. AnatomyNeurons is always active or at restResting PotentialElectric charge against cell wallAction potentialCell membrane opens and ions goes inNeurons expend metabolic energy to create a chemical gradient.Refractory periodPositive ions get pumped out. Get another ion to go action potential.It contains 3 important positive ions.PotassiumCalciumSodiumNeural activity creates distinctions in the neuron’s rate of firing.Slow firingA few action potentials in a second.Many action potentials in a secondII. CommunicationA neuron ejects it’s particular combination of neuron transmitters.Most receptors on dendrite.ExcitatoryMore likely to fireLess likely to fireIndigenous MorphinePain suppressorsUse SSRI when you loose serotoninReuptake inhibitorAnti- depressantIII. Neurons use chemical gradient to connect systemsMemoryIV. Logic & ThoughtLogical relations are defined by truth tablesLogicPertaining to reasonConnectionist systems use connections to store information and process it.Turning completenessA measure of abilityTurning, A.M. (1937) on computable numbers, with an application on the entscheidungs problem,Neurons can be arranged to perform any computable function.Genetic information arranges neurons into network, and early development refine these networks.PSYCH 112 1st Edition Lecture 6 I. Information- A mathematical theory of communication.- Needs constant investment of energy. II. Anatomy- Neurons is always active or at rest- Resting Potentialo Electric charge against cell wall - Action potentialo Cell membrane opens and ions goes in- Neurons expend metabolic energy to create a chemical gradient.- Refractory period o Positive ions get pumped out. Get another ion to go action potential.- It contains 3 important positive ions.o Potassium o Calciumo Sodium- Neural activity creates distinctions in the neuron’s rate of firing.- Slow firingo A few action potentials in a second.o Many action potentials in a second II. Communication- A neuron ejects it’s particular combination of neuron transmitters.- Most receptors on dendrite.- Excitatoryo More likely to fireo Less likely to fire- Indigenous Morphineo Pain suppressorso Use SSRI when you loose serotonin - Reuptake inhibitoro Anti- depressant III. Neurons use chemical gradient to connect systems- Memory IV. Logic & Thought- Logical relations are defined by truth tables - Logico Pertaining to reason- Connectionist systems use connections to store information and process it.- Turning completenesso A measure of abilityo Turning, A.M. (1937) on computable numbers, with an application on the entscheidungs problem,- Neurons can be arranged to perform any computable function.- Genetic information arranges neurons into network, and early development refine these


View Full Document
Loading Unlocking...
Login

Join to view Neurocomputation (Why Neurons) and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Neurocomputation (Why Neurons) and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?