Lecture title - The anterolateral system sends information to different parts of the brainstem/forebrain
3 important questions on Lecture title - The anterolateral system sends information to different parts of the brainstem/forebrain
What are the 2 functional pathways that signals are sent via to various regions of the brainstem and forebrain?
Which route identifies the location, intensity, and quality of the pain?
Which route processes the emotional "unpleasantness" and the body's autonomic response to pain
- Sensory-Discriminative Pathway, identifies the location, intensity, and quality of the pain
- Affective-Motivational Pathway, processes the emotional "unpleasantness" and the body's autonomic response to pain
Where does the Sensory-Discriminative Pathway route signals to and via what structure?
Route signals travel through the ventral posterior nucleus of the thalamus to the The somatosensory cortex (S1, S2)
Which 3 destinations does Affective-Motivational Pathway distributes information to?
Brainstem Regions: Signals reach the reticular formation (for arousal), the superior colliculus (for orienting to the stimulus), and the periaqueductal grey (which can trigger descending pain suppression)
Forebrain Regions: Information is sent to the amygdala and hypothalamus to coordinate emotional and autonomic responses
Cortical Destination: Through the midline thalamic nuclei, the signals reach the anterior cingulate cortex and the insular cortex, which are responsible for the subjective feeling of "suffering"
Forebrain Regions: Information is sent to the amygdala and hypothalamus to coordinate emotional and autonomic responses
Cortical Destination: Through the midline thalamic nuclei, the signals reach the anterior cingulate cortex and the insular cortex, which are responsible for the subjective feeling of "suffering"
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