supplementary motor area
E211954
The supplementary motor area is a region of the medial frontal cortex involved in planning, coordinating, and initiating complex voluntary movements, especially those requiring sequences or bilateral coordination.
All labels observed (6)
| Label | Occurrences |
|---|---|
| supplementary motor area canonical | 11 |
| pre-supplementary motor area | 4 |
| pre-SMA | 3 |
| Brodmann area 6 | 1 |
| medial premotor cortex | 1 |
| supplementary motor area proper | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1909527 — 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: supplementary motor area Context triple: [Broca's area, connectedTo, supplementary motor area]
-
A.
Broca's area
Broca's area is a region in the frontal lobe of the dominant hemisphere of the brain that is crucial for speech production and language processing.
-
B.
Wernicke area
Wernicke area is a region of the human brain’s temporal lobe crucial for understanding spoken and written language.
-
C.
prefrontal cortex
The prefrontal cortex is the front part of the brain’s frontal lobes responsible for higher-order functions such as decision-making, attention, impulse control, and working memory.
-
D.
RA (robust nucleus of the arcopallium)
RA (robust nucleus of the arcopallium) is a premotor song-control nucleus in the songbird brain that plays a key role in generating and learning vocalizations, particularly studied in species like the zebra finch.
-
E.
Broca
Broca is a French surname most famously associated with Paul Broca, the 19th-century physician and anatomist who identified the brain region responsible for speech production.
- 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: supplementary motor area Target entity description: The supplementary motor area is a region of the medial frontal cortex involved in planning, coordinating, and initiating complex voluntary movements, especially those requiring sequences or bilateral coordination.
-
A.
Broca's area
Broca's area is a region in the frontal lobe of the dominant hemisphere of the brain that is crucial for speech production and language processing.
-
B.
Wernicke area
Wernicke area is a region of the human brain’s temporal lobe crucial for understanding spoken and written language.
-
C.
prefrontal cortex
The prefrontal cortex is the front part of the brain’s frontal lobes responsible for higher-order functions such as decision-making, attention, impulse control, and working memory.
-
D.
RA (robust nucleus of the arcopallium)
RA (robust nucleus of the arcopallium) is a premotor song-control nucleus in the songbird brain that plays a key role in generating and learning vocalizations, particularly studied in species like the zebra finch.
-
E.
Broca
Broca is a French surname most famously associated with Paul Broca, the 19th-century physician and anatomist who identified the brain region responsible for speech production.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
brain region
ⓘ
cortical area ⓘ motor area ⓘ region of medial frontal cortex ⓘ |
| activatedBy |
bimanual tasks
ⓘ
complex sequential finger movements ⓘ internally triggered movements ⓘ motor imagery tasks ⓘ |
| borderedBy |
premotor cortex
ⓘ
primary motor cortex ⓘ |
| connectedTo |
basal ganglia
ⓘ
cingulate motor areas ⓘ parietal cortex ⓘ premotor cortex ⓘ primary motor cortex ⓘ spinal cord via corticospinal tract ⓘ thalamus ⓘ |
| discoveredBy |
Theodore Rasmussen
ⓘ
Wilder Penfield ⓘ |
| discoveryDate | 1950s ⓘ |
| foundIn |
human brain
ⓘ
non‑human primate brain ⓘ |
| hasAbbreviation | SMA ⓘ |
| hasRoleIn |
bilateral motor control
ⓘ
preparation of movement sequences ⓘ selection of movements ⓘ temporal organization of movement ⓘ |
| hasSubdivision |
SMA proper
ⓘ
pre‑SMA ⓘ |
| involvedIn |
bimanual coordination
ⓘ
coordination of complex movements ⓘ initiation of voluntary movement ⓘ internally generated movements ⓘ motor imagery ⓘ motor planning ⓘ postural control related to movement ⓘ sequencing of movements ⓘ speech motor planning ⓘ |
| lesionAssociatedWith | SMA syndrome ⓘ |
| lesionCauses |
akinesia
ⓘ
difficulty initiating movement sequences ⓘ impaired bimanual coordination ⓘ speech initiation deficits ⓘ |
| locatedIn |
Brodmann area 6
ⓘ
linked to:
supplementary motor area
medial surface of hemisphere ⓘ superior frontal gyrus ⓘ |
| partOf |
cerebral cortex
ⓘ
frontal lobe ⓘ medial frontal cortex ⓘ
linked to:
premotor cortex
|
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: supplementary motor area Description of subject: The supplementary motor area is a region of the medial frontal cortex involved in planning, coordinating, and initiating complex voluntary movements, especially those requiring sequences or bilateral coordination.
Referenced by (21)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: supplementary motor area
linked to: supplementary motor area
linked to: supplementary motor area
subject linked to:
SMA
linked to: supplementary motor area
subject linked to:
SMA
linked to: supplementary motor area
linked to: supplementary motor area
linked to: supplementary motor area
linked to: supplementary motor area
linked to: supplementary motor area
linked to: supplementary motor area