Psycholinguistic and Motor Theories of Apraxia of Speech

ABSTRACT

This article sketches the relationships between modern conceptions of apraxia of speech (AOS) and current models of neuromotor and neurolinguistic disorders. The first section is devoted to neurophysiological perspectives of AOS, and its relation to dysarthrias and to limb apraxia is discussed. The second section introduces the logogen model and considers AOS in relation to supramodal aspects of aphasia. In the third section, AOS with the background of psycholinguistic models of spoken language production, including the Levelt model and connectionist models, is discussed. In the fourth section, the view of AOS as a disorder of speech motor programming is discussed against the background of theories from experimental psychology. The final section considers two models of speech motor control and their relation to AOS. The article discusses the strengths and weaknesses of these approaches.

KEYWORDS

Apraxia of speech - motor control - speech production models

REFERENCES

• 1 Darley F L, Aronson A E, Brown J R. Motor Speech Disorders.  Philadelphia, PA: Saunders 1975
• 2 Bay E. Die corticale Dysarthrie und ihre Beziehungen zur sog. Motorischen Aphasie.  Deutsche Zeitschrift für Nervenheilkunde . 1957;  176 553-594
• 3 Lebrun Y. Aphasie de Broca et anarthrie.  Acta Neurol Belg . 1982;  82 80-90
• 4 Alajouanine T, Ombredane A, Durand M. Le syndrome de désintégration phonétique dans l'aphasie.  Paris: Masson 1939
• 5 Dronkers N F. A new brain region for coordinating speech articulation.  Nature . 1996;  384 159-161
• 6 Schiff H B, Alexander M P, Naeser M, Galaburda A M. Aphemia. Clinical-anatomic correlations.  Arch Neurol . 1983;  40 720-727
• 7 Taubner R W, Raymer A M, Heilman K M. Frontal-opercular aphasia.  Brain Lang . 1999;  70 240-261
• 8 Lecours A R, Lhermitte F. The ``pure form'' of the phonetic disintegration syndrome (pure anarthria); anatomo-clinical report of a historical case.  Brain Lang . 1976;  3 88-113
• 9 Urban P P, Wicht S, Vukurevic G. Dysarthria in acute ischemic stroke. Lesion topography, clinicoradiologic correlation, and etiology.  Neurology . 2001;  56 1021-1027
• 10 Geyer S, Ledberg A, Schleicher A. Two different areas within the primary motor cortex of man.  Nature . 1996;  382 805-807
• 11 Karni A, Meyer G, Jezzard P. Functional MRI evidence for adult motor cortex plasticity during motor skill learning.  Nature . 1995;  377 155-158
• 12 Leiguarda R C, Marsden C D. Limb apraxias. Higher-order disorders of sensorimotor integration.  Brain . 2000;  123 860-879
• 13 Cubelli R, Della Sala S. The legacy of automatic/ voluntary dissociation in apraxia.  Neurocase . 1996;  2 449-454
• 14 Goldenberg G, Hagmann S. The meaning of meaningless gestures: a study of visuo-imitative apraxia.  Neuropsychologia . 1997;  35 333-341
• 15 Hermsdörfer J, Mai N, Spatt J. Kinematic analysis of movement imitation in apraxia.  Brain . 1996;  119 1575-1586
• 16 Clark M A, Merians A S, Kothari A. Spatial planning deficits in limb apraxia.  Brain . 1994;  117 1093-1106
• 17 Nickels L. Spoken word production and its breakdown in aphasia.  Hove, UK: Psychology Press 1997
• 18 Caramazza A, Miceli G, Villa G. The role of the (output) phonological buffer in reading, writing, and repetition.  Cognitive Neuropsychology . 1986;  3 37-76
• 19 Lambon Ralph A M, Cipolotti L, Patterson K. Oral naming and oral reading: do they speak the same language?.  Cognitive Neuropsychology . 1999;  16 157-169
• 20 Martin A D. Some objections to the term `apraxia of speech.' Journal of Speech and Hearing Disorders .  1974;  39 53-64
• 21 Caramazza A, Miceli G, Villa G, Romani C. The role of the graphemic buffer in spelling: evidence from a case of acquired dysgraphia.  Cognition . 1987;  26 59-85
• 22 Ellis A W, Miller D, Sin G. Wernicke's aphasia and normal language processing: a case study in cognitive neuropsychology.  Cognition . 1983;  15 111-144
• 23 Caramazza A, Miceli G, Villa G. The role of the (output) phonological buffer in reading, writing, and repetition.  Cognitive Neuropsychology . 1986;  3 37-76
• 24 Nickels L, Howard D. Phonological errors in aphasic naming: comprehension, monitoring and lexicality.  Cortex . 1995;  31 209-237
• 25 Shallice T, Rumiati R I, Zadini A. The selective impairment of the phonological output buffer.  Cognitive Neuropsychology . 2000;  17 517-546
• 26 Martin N, Saffran E M. The relationship of input and output phonological processing: an evaluation of models and evidence to support them.  Aphasiology . 2002;  16 107-150
• 27 Baddeley A. Recent developments in working-memory.  Curr Opin Neurobiol . 1998;  8 234-238
• 28 Baddeley A D, Wilson B A. Phonological coding and short-term memory in patients without speech.  Journal of Memory and Language . 1985;  24 490-502
• 29 Waters G S, Rochon E. The role of high-level speech planning in rehearsal: evidence from patients with apraxia of speech.  Journal of Memory and Language . 1992;  31 54-73
• 30 Rochon E, Caplan D, Waters G. Short-term memory processes in patients with apraxia of speech: implications for the nature and structure of the auditory verbal short-term memory system.  Journal of Neurolinguistics . 1990;  5 237-264
• 31 Caplan D, Waters G S. On the nature of the phonological output planning processes involved in verbal rehearsal: evidence from aphasia.  Brain Lang . 1995;  48 191-220
• 32 Cheung H, Chen H-C, Lai C Y, Wong O C, Hills M. The development of phonological awareness: effects of spoken language experience and orthography.  Cognition . 2001;  81 227-241
• 33 Castro-Caldas A, Petersson K M, Reis A, Stone-Elander S, Ing M. The illiterate brain-learning to read and write during childhood influences the functional-organization of the adult brain.  Brain . 1998;  121 1053-1063
• 34 Levelt W JM. Speaking.  From Intention to Articulation. Cambridge, MA: MIT Press; 1989
• 35 Levelt W JM, Roelofs A, Meyer A S. A theory of lexical access in speech production.  Behavioral Brain Science . 1999;  22 1-38
• 36 Levelt W JM, Wheeldon L R. Do speakers have access to a mental syllabary?.  Cognition . 1994;  50 239-269
• 37 Browman C P, Goldstein L. The gestural phonology model. In: Hulstijn W, Peters HFM, Lieshout PHHMv, eds. Speech Production: Motor Control, Brain Research and Fluency Disorders Amsterdam: Elsevier 1997: 57-71
• 38 Roelofs A. Spoken language planning and the initiation of articulation.  The Q J Exp Psychol . 2002;  55A 465-483
• 39 Roelofs A, Meyer A S, Levelt W JM. A case for the lemma/lexeme distinction in models of speaking: comment on Caramazza and Miozzo (1997).  Cognition . 1998;  69 219-230
• 40 Nickels L, Howard D. When the words won't come: relating impairments and models of spoken word production. In: Wheeldon L, ed. Aspects of Language Production Hove, UK: Psychology Press 2000: 115-142
• 41 Varley R A, Whiteside S P. What is the underlying impairment in acquired apraxia of speech?.  Aphasiology . 2001;  15 39-49
• 42 Aichert I, Ziegler W, Deger K, Brendel B. The syllable in apraxia of speech. In: Maassen B, Hulstijn W, Kent RD, Peters HFM, van Lieshout PHHM, eds. Speech Motor Control in Normal and Disordered Speech Nijmegen: Uitgeverij Vantilt; 2001: 167-170
• 43 Dell G S. A spreading-activation theory of retrieval in sentence production.  Psychol Rev . 1986;  93 283-321
• 44 Martin N, Dell G S, Saffran E M, Schwartz M F. Origins of paraphasias in deep dysphasia: testing the consequences of a decay impairment to an interactive spreading activation model of lexical retrieval.  Brain Lang . 1994;  47 609-660
• 45 Caramazza A, Papagno C, Ruml W. The selective impairment of phonological processing in speech production.  Brain Lang . 2000;  75 428-450
• 46 Romani C, Calabrese A. Syllabic constraints in the phonological errors of an aphasic patient.  Brain Lang . 1998;  64 83-121
• 47 Nadeau S. Phonology: a review and proposals from a connectionist perspective.  Brain Lang . 2001;  79 511-579
• 48 Keele S W, Cohen A, Ivry R. Motor programs: concepts and issues. In: Jeannerod M, ed. Motor Representations and Control, Vol 13. Hillsdale, NJ: Erlbaum 1990: 77-110
• 49 Klapp S T, Erwin C I. Relation between programming time and duration of the response being programmed.  J Exp Psychol Hum Percept Perform . 1976;  2 591-598
• 50 Klapp S T. Motor response programming during simple and choice reaction time: the role of practice.  J Exp Psychol Hum Percept Perform . 1995;  21 1015-1027
• 51 Hulstijn W, van Lieshout P H M H. A motor skill approach to stuttering. In: Ziegler W, Deger K, eds. Clinical Phonetics and Linguistics London: Whurr 1998: 391-404
• 52 Rogers M A, Storkel H L. Planning speech one syllable at a time: the reduced buffer capacity hypothesis in apraxia of speech.  Aphasiology . 1999;  13 793-805
• 53 Deger K, Ziegler W. Speech motor programming in apraxia of speech (in press).  J Phonet 2002.
• 54 Schmidt R A. Motor Control and Learning.  2nd ed. Champaign, IL: Human Kinetics Publishers 1988
• 55 Viviani P, Terzuolo C. Space-time invariance in learned motor skills. In: Stelmach GE, Requin J, eds. Tutorials in Motor Behavior Amsterdam: North-Holland 1980: 525-533
• 56 Clark H M, Robin D A. Generalized motor programme and parameterization accuracy in apraxia of speech and conduction aphasia.  Aphasiology . 1998;  12 699-713
• 57 Löfqvist A. Proportional timing in speech motor control.  Journal of Phonetics . 1991;  19 343-350
• 58 Gracco V L, Abbs J H. Dynamic control of the perioral system during speech: kinematic analyses of autogenic and nonautogenic sensorimotor processes.  J Neurophysiol . 1985;  54 418-432
• 59 Wolpert D M, Ghahramani Z, Flanagan J R. Perspectives and problems in motor learning.  Trends in Cognitive Sciences . 2001;  5 487-494
• 60 Kelso J AS, Saltzman E L, Tuller B. The dynamical perspective on speech production: data and theory.  Journal of Phonetics . 1986;  14 29-59
• 61 Saltzman E, Kelso J AS. Skilled actions: a task-dynamic approach.  Psychol Rev . 1987;  94 84-106
• 62 Kelso J AS, Tuller B. Toward a theory of apractic syndromes.  Brain Lang . 1981;  12 224-245
• 63 Perkell J S, Matthies M L, Svirsky M A, Jordan M I. Trading relations between tongue-body raising and lip rounding in production of the vowel /u/: A pilot ``motor equivalence'' study.  J Acoust Soc Am . 1993;  93 2948-2961
• 64 Guenther F H, Espy-Wilson C Y, Boyce S E. Articulatory tradeoffs reduce acoustic variability during American English /r/ production.  J Acoust Soc Am . 1999;  105 2854-2865
• 65 Lindblom B, Lubker J, Gay T. Formant frequencies of some fixed-mandible vowels and model of speech motor programming by predictive simulation.  Journal of Phonetics . 1979;  7 147-161
• 66 Guenther F H, Hampson M, Johnson D. A theoretical investigation of reference frames for the planning of speech movements.  Psychol Rev . 1998;  105 611-633

1 *Chinese prereading children may speak normally but score near random on rime-, onset-, or coda-matching tasks.[32] Illiterate adults may have problems on explicit phonological segmentation or pseudoword repetiton tasks, although they have normal speech.[33]