The Frontal Lobes
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14 terms
Terms | Definitions |
|---|---|
 What is the frontal cortex comprised of? Prefrontal? | Frontal-Primary Motor Cortex, supplemental Motor Prefrontal-Dorsolateral prefrontal, Medial Frontal, Orbital Frontal |
| What does ontogeny follow? | Phylogeny (embryo development follows evolution) |
| What is the basal ganglia composed of? | Caudate, Putamen, Globus Pallidus, Subthalamic nucleus and substantia nigra. |
| What is the circuit for dorsolateral prefrontal cortex? | DL prefrontal cortex to DL caudate to Lateral DM Globus Pallidus to VA and MD Thalamus |
| What is the circuit for Lateral Oribital cortex? | Lateral Orbital Cortex to VM Caudate to MDM Globus Pallidus to the VA MD Thalamus |
| What is the circuit for Medial Frontal (Anterior Cingulate) cortex? | Anterior Cingulate Cortex-Nucleus Accumbens-Rostrolateral GP-to the MD Thalamus |
| What functionally is the medial frontal circuit for? | Motivation and deciding |
| What functionally is the orbital frontal circuit for? | Social Behavior and Reward/punishment assessment |
| What functionally is the Dorsolateral prefrontal circuit for? | Planning, problem solving, working memory |
| What does the indirect pathway do? Direct? | Indirect-Inhibits Direct-disinhibits |
| What circuit do behavioral circuits mirror? | Motor circuit |
| What kind of syndrome is associated with the dorsolateral? Describe it. What are tests? | Dysexecutive syndrome-Scarecrow-poor visual/spacial/motor organization/planning, Reduced fluency, poor focus, Poor shifting/maintaining set, Poor hypothesis generation, poor problem solving, poor short term memory Tests-Wisconsin card sorting, Trail Making, Clock Drawing, Fist-edge-pal |
| What kind of syndrome is associated with the medial frontal? Describe it. What are tests? | Apathy Syndrome-Tin Man-Absence of motor/psychic initiative, indifference to pain, thirst, and hunger, No spontaneous speech/movement, Lack of desire, Flat affect-Most sever form is Mutism followed by akinesia, Lack of persistance Tests-Paper test |
| What kind of syndrome is associated with the orbitofrontal? Describe it. What are tests? | Disinhibition Syndrome-The Lion-lack of social comportment, inappropriate behavior, impulsivity, Lack of concern, Irresponsibility. Superficial jocularity Tests-Tests of judgement (EXIT-25), Go/No-Go tasks, Alternating sequence tasks (Finger-Nose-Finger, Chop-slap-fist, touch-raise, echopraxia probes, Stroop interference task |
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