M1
E764618
M1 is the region of the brain’s frontal lobe responsible for executing voluntary movements by sending motor commands to the muscles.
All labels observed (1)
| Label | Occurrences |
|---|---|
| M1 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8902089 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: M1 Context triple: [primary motor cortex, alsoKnownAs, M1]
-
A.
M1
M1 is one of the main lines of the Bucharest Metro, forming part of the city’s core rapid transit network.
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B.
M1
M1 is a boat line that operates as part of Geneva’s public transport network, providing passenger service across the city’s waters.
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C.
M1
M1 is the first and primary north–south metro line of the Warsaw Metro system in Poland.
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D.
M1
M1 is Budapest’s historic Millennium Underground line, one of the world’s oldest metro lines and a UNESCO World Heritage site.
-
E.
M1
M1 is a major motorway in New South Wales, Australia, forming a key part of the coastal route between Sydney and the state's northern and southern regions.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: M1 Target entity description: M1 is the region of the brain’s frontal lobe responsible for executing voluntary movements by sending motor commands to the muscles.
-
A.
M1
M1 is a major motorway in New South Wales, Australia, forming a key part of the coastal route between Sydney and the state's northern and southern regions.
-
B.
M1
M1 is the first and primary north–south metro line of the Warsaw Metro system in Poland.
-
C.
M1
M1 is one of the main lines of the Bucharest Metro, forming part of the city’s core rapid transit network.
-
D.
M1
M1 is one of the main lines of the Copenhagen Metro, providing rapid transit service through central Copenhagen and connecting key residential and commercial areas.
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E.
M1
M1 is a major north–south motorway in England connecting London with Leeds and forming a key part of the UK’s primary road network.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
brain region
ⓘ
cortical area ⓘ primary motor cortex ⓘ |
| alsoKnownAs |
Brodmann area 4
ⓘ
primary motor area ⓘ
linked to:
primary motor cortex
|
| associatedWith |
corticobulbar tract
ⓘ
corticospinal tract ⓘ |
| BrodmannAreaNumber | 4 ⓘ |
| cellType | pyramidal neurons ⓘ |
| contains |
Betz cells
ⓘ
upper motor neurons ⓘ |
| damageCauses |
contralateral paralysis
ⓘ
contralateral weakness ⓘ loss of fine motor control ⓘ |
| hasFunction |
control of contralateral body movements
ⓘ
execution of voluntary movements ⓘ fine motor control ⓘ force and direction coding of movements ⓘ sending motor commands to muscles ⓘ |
| hemisphereSpecificity | each hemisphere controls contralateral side of body ⓘ |
| involvedIn |
motor adaptation
ⓘ
motor learning ⓘ |
| locatedIn |
cerebral cortex
ⓘ
frontal lobe ⓘ precentral gyrus ⓘ
linked to:
primary motor cortex
|
| locatedRelativeTo | anterior to central sulcus ⓘ |
| modulatedBy |
cerebellar-thalamic projections
ⓘ
dopaminergic input via basal ganglia circuits ⓘ |
| neurotransmitter | glutamate (excitatory output) ⓘ |
| organizedAs |
motor homunculus
ⓘ
somatotopic map ⓘ |
| partOf |
frontal lobe
ⓘ
motor system ⓘ neocortex ⓘ |
| presentIn | most mammals ⓘ |
| projectsTo |
brainstem motor nuclei
ⓘ
spinal cord ⓘ |
| receivesInputFrom |
basal ganglia
ⓘ
cerebellum ⓘ premotor cortex ⓘ somatosensory cortex ⓘ
linked to:
primary somatosensory cortex
supplementary motor area ⓘ |
| researchMethod |
electrophysiological recording
ⓘ
functional MRI ⓘ transcranial magnetic stimulation ⓘ |
| species | human ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: M1 Description of subject: M1 is the region of the brain’s frontal lobe responsible for executing voluntary movements by sending motor commands to the muscles.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.