Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Neuroanatomical Syst

Limbic System

Triune concept of McLean: Evolution and the Limbic System 1)Protoreptilian Brain: Instinct 2)Paleomammalian Brain: Limbic System –Emotion 3)Neomammalian Brain: Neocortex –Analytical Rasoning
Papez Circuit Hippocampus>(Fimbria Fornix)> Mamillary bodies> (Mamillothalamic tract)> Anterodorsal Thalamus> (Anterior Thalamic Radiations)> Cingulate Cortex > (Cingulum) > Parahippocampal Regions> (Perforant Pathway)
Nauta Septo-(preoptico)-hypothalamic-mesencephalic continuum
Current Conceptions of the Limbic System •Includes the amygdala •Modified Papez circuitry •Multiple and complex functions
Summary of Limbic Connections 1) Motivation (distributed in brain, includes hypothalamus and ANS) 2) Emotion (amygdala) 3) Memory (hippocampus)
Characteristics of Limbic Functions •Neither sensory nor motor but linked to both •Special links to autonomic and neuroendocrine(hypothalamus) systems •Have a cognitive component
Amygdala Zones *Basolateral: neocortical input, subcortical output. Role - memory, emotional significance of stimuli *Corticomedial:olfactory input, hypoth output. Role -feeding,appetite *Central:visceral sensory/motor, postparietal cortex. Role- auto responses to emo
Major Circuit through the HCF Entorhinal (via perforantpath to...) Dentate gyrus granule cells (mossy fiber pathway) CA3 pyramids (via Schaeffer collaterals to...) CA1 pyramids Subiculum Entorhinal (closes loop)
Major Inputs to Hippocampal Formation Cortical:Entorhinal cortex via perforant pathway (largest) Subcortical: Septum -Via the fornix -Cholinergic
Septal Nuclei A major fornix target(reciprocal cholinergic modulation w/ the hippocampus) Other connections with Hypothalamus, Amygdala, Cingulate cortex Self-stimulation hot spot (pleasure center)
Evidence for Cortical Role in Emotion •Irritability with sham rage implies tonic forebrain control •Emotion affects cognition and vice versa •PhineasGage •Cognition plays a role in our interpretation of affect
BarbasPaper: Prefrontal cortex and synthesis of Cognition, Memory, and Emotion •Lateral Prefrontal Areas: Early visual processing, Attention,Working memory •Orbitofrontal Areas: Late visual processing,Object memory •Limbic (medial) Prefrontal Areas: Emotional memory, Long-term memory
Created by: brown55