Table 2. Language processes engaged by different language and baseline tasks.
Language processes | Domain general processes | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Task | N studies | Speech motor planning/ articulation | Phonological access | Orthographical processing | Semantics | Word retrieval | Syntax | Working memory | Motor processing | Auditory processing |
Language tasks | ||||||||||
Verbal fluency | 53 | ✔ | ✔ | (✔) | (✔) | ✔ | ✔ | |||
Sentence generation | 5 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |||
Passive speech listening | 7 | ✔ | ✔ | ✔ | (✔) | ✔ | ||||
Text reading | 2 | ✔ | ✔ | ✔ | ✔ | ✔ | (✔) | |||
Phonemic decision | 8 | (✔) | ✔ | (✔) | (✔) | (✔) | ✔ | (✔) | ||
Semantic decision | 20 | (✔) | (✔) | ✔ | (✔) | ✔ | (✔) | |||
Sentence comprehension | 8 | ✔ | (✔) | ✔ | ✔ | ✔ | (✔) | |||
Naming | 9 | ✔ | ✔ | ✔ | ✔ | |||||
Baseline tasks | ||||||||||
Rest | 37 | (✔) | ||||||||
Perceptual decision (non-linguistic) | 25 | ✔ | (✔) | |||||||
Finger tapping | 3 | ✔ | ||||||||
Non-word/word repetition | 8 | ✔ | ✔ | |||||||
Recite months of the year/count sequence | 2 | ✔ | ✔ | (✔) | ✔ | |||||
Tone listening | 3 | ✔ | ||||||||
Backward speech listening | 2 | ✔ | ||||||||
Nonsense text reading | 2 | ✔ | ✔ | ✔ | ||||||
Spatial position naming | 1 | ✔ | ✔ | ✔ | ✔ |
Notes.
- ✔
- engaged
- (✔)
- sometimes engaged (e.g., depending on task demands, modality of stimuli, occurrence of automatic linguistic processing)