Dysarthria in amyotrophic lateral sclerosis: A review

References

• Borasio GD, Voltz R. Palliative care in amyotrophic lateral sclerosis. J Neurol 1997; 4: S11–7
   Google Scholar
• Borasio GD, Voltz R, Miller RG. Palliative care in amyotrophic lateral sclerosis. Neurol Clin. 2001; 19: 829–47
   PubMed Web of Science ®Google Scholar
• Leigh PN, Abrahams S, Al-Chalabi A, Ampong MA, Goldstein LH, Johnson J, et al. The management of motor neuron disease. J Neurol Neurosurg Psychiatry. 2003; 74(4)32–47
   Google Scholar
• Watts CR, Vanryckeghem M. Laryngeal dysfunction in amyotrophic lateral sclerosis: a review and case report. BMC Ear Nose Throat Disord. 2001; 1: 1
   PubMedGoogle Scholar
• Yorkston KM. Treatment efficacy: dysarthria. J Speech Hear Res. 1996; 36: S46–57
   Google Scholar
• Bach JR. Amyotrophic lateral sclerosis: communication status and survival with ventilatory support. Am J Phys Med. 1993; 72: 343–9
   Google Scholar
• Mitsumoto H, Del Bene M. Improving the quality of life for people with ALS: the challenge ahead. Amyotroph Lateral Scler Other Motor Neuron Disord. 2000; 1: 329–36
   PubMed Web of Science ®Google Scholar
• Sellars C, Hughes T, Langhorne P. Speech and language therapy for dysarthria due to non-progressive brain damage. Cochrane Database Syst Rev. 2005; 20, CD002088
   Google Scholar
• Pahwa R, Factor SA, Lyons KE, Ondo WG, Gronseth G, Bronte-Stewart H, et al. Practice Parameter: treatment of Parkinson's disease with motor fluctuations and dyskinesia (an evidence-based review). Report of the Quality Standards Subcommittee of the American Academy of Neurology. Neurology. 2006; 66: 983–95
   PubMed Web of Science ®Google Scholar
• Kent RD. Research on speech motor control and its disorders: a review and prospective. J Commun Disord. 2000; 33: 391–427
   PubMed Web of Science ®Google Scholar
• Yorkston KM, Strand E, Miller R, Hillel A, Smith K. Speech deterioration in amyotrophic lateral sclerosis: implications for the timing of intervention. J Med Speech Lang Pathol. 1993; 1: 35–46
   Google Scholar
• Traynor BJ, Codd MB, Corr B, Forde C, Frost E, Hardiman O. Clinical features of amyotrophic lateral sclerosis according to the El Escorial and Airlie House diagnostic criteria: a population-based study. Arch Neurol. 2000; 57: 1171–6
   PubMed Web of Science ®Google Scholar
• Darley F, Aronson A, Brown J. Clusters of deviant speech dimensions in the dysarthrias. J Speech Hear Res. 1969; 12: 462–96
   PubMedGoogle Scholar
• Darley F, Aronson A, Brown J. Differential diagnostic patterns of dysarthria. J Speech Hear Res. 1969; 12: 246–69
   PubMedGoogle Scholar
• Kent RD, Kent JF, Weismer G. What dysarthrias can tell us about the neural control of speech. J Phon. 2000; 28: 273–302
   Web of Science ®Google Scholar
• Roth CR, Glaze LE, Goding GS, Jr, David WS. Spasmodic dysphonia symptoms as initial presentation of amyotrophic lateral sclerosis. J Voice. 1996; 10: 362–7
   PubMed Web of Science ®Google Scholar
• Strong MJ, Grace GM, Orange JB, Leeper HA. Cognition, language, and speech in amyotrophic lateral sclerosis: a review. J Clin Exp Neuropsychol. 1996; 18: 291–303
   PubMed Web of Science ®Google Scholar
• Okuda B, Kodama N, Kawabata K, Tachibana H, Sugita M., Corneomandibular reflex in ALS. Neurology. 1999; 52: 1699–701
   PubMed Web of Science ®Google Scholar
• Mitsumoto H, Chad DA, Pioro EK. Speech and communication management. Amyotrophic Lateral Sclerosis, H Mitsumoto, DA Chad, EK Pioro. FA Davis Co, New York 1998; 405–20
   Google Scholar
• McGuirt WF, Blalock D. The otolaryngologist's role in the diagnosis and treatment of amyotrophic lateral sclerosis. Laryngoscope. 1980; 90: 1496–501
   PubMed Web of Science ®Google Scholar
• Hillel A, Dray T, Miller R, Konikow N, Strande E, Browne J. Presentation of ALS to the otolaryngologist/ head and neck surgeon: getting to the neurologist. Neurology 1999; 53(Suppl 5)S22–5
   PubMedGoogle Scholar
• Chen A, Garrett CG. Otolaryngological presentations of amyotrophic lateral sclerosis. Otolaryngol Head Neck Surg. 2005; 132: 500–4
   PubMed Web of Science ®Google Scholar
• Klasner E, Yorkston K, Strand E. Patterns of perceptual features in speakers with ALS: a preliminary study of prominence and intelligibility considerations. J Med Speech Langue Pathol. 1999; 7: 117–25
   Google Scholar
• Janzen VD, Rae RE, Hudson AJ. Otolaryngological manifestations of amyotrophic lateral sclerosis. J Otolaryngol. 1988; 17: 41–2
   PubMedGoogle Scholar
• Aronson AE, Ramig LO, Winholtz WS, Silber SR. Rapid voice tremor, or ‘flutter’, in amyotrophic lateral sclerosis. Ann Otol Rhinol Laryngol. 1992; 101: 511–8
   PubMed Web of Science ®Google Scholar
• Tomik J, Tomik B, Partyka D, Skladzien J, Szczudlik A. Profile of laryngological abnormalities in patients with amyotrophic lateral sclerosis. J Laryngol Otol. 2007; 26: 1–6
   Google Scholar
• Ball LJ, Willis A, Beukelman DR, Pattee GL. A protocol for identification of early bulbar signs in ALS. J Neurol Sci. 2001; 191: 43–53
   PubMed Web of Science ®Google Scholar
• Turner GS, Tjaden K, Weismer G. The influence of speaking rate on vowel space and speech intelligibility for individuals with amyotrophic lateral sclerosis. J Speech Hear Res. 1995; 38: 1001–13
   PubMedGoogle Scholar
• Weismer G, Laures JS, Jeng JY, Kent RD, Kent JF. Effect of speaking rate manipulations on acoustic and perceptual aspects of dysarthria in ALS. Folia Phoniatr. 2000; 52: 201–19
   PubMed Web of Science ®Google Scholar
• Kent RD, Sufit RL, Rosenbek JC, Kent JF, Weismer G, Martin RE, et al. Speech deterioration in amyotrophic lateral sclerosis: a cases study. J Speech Hear Res. 1991; 34: 1269–75
   PubMedGoogle Scholar
• Caruso AJ, Burton EK. Temporal acoustic measures of dysarthria associated with amyotrophic lateral sclerosis. J Speech Hear Res. 1987; 30: 80–7
   PubMedGoogle Scholar
• Turner GS, Tjaden K, Weismer G. The influence of speaking rate on vowel space and speech intelligibility for individuals with amyotrophic lateral sclerosis. J Speech Hear Res. 1995; 38: 1001–13
   PubMedGoogle Scholar
• Hillel AD, Miller RM, Yorkston K, McDonald E, Norris FH, Konikow N. Amyotrophic lateral sclerosis severity scale. Neuroepidemiology. 1989; 8: 142–5
   PubMed Web of Science ®Google Scholar
• Cedarbaum JM, Stambler N, Malta E, Fuller C, Hilt D, Thurmond B, et al. The ALSFRS-R: a revised ALS functional rating scale that incorporates assessments of respiratory function. BDNF ALS Study Group (Phase III). J Neurol Sci. 1999; 169: 13–21
   PubMed Web of Science ®Google Scholar
• Appel V, Stewart SS, Smith G, Appel SH. A rating scale for amyotrophic lateral sclerosis: description and preliminary experience. Ann Neurol. 1987; 22: 328–33
   PubMed Web of Science ®Google Scholar
• Norris FH, Jr, Calanchini PR, Fallat RJ, Panchari S, Jewett B. The administration of guanidine in amyotrophic lateral sclerosis. Neurology. 1974; 24: 721–8
   PubMed Web of Science ®Google Scholar
• Goonetilleke A, Guiloff RJ. Accuracy, reproducibility and variability of quantitative assessments of bulbar and respiratory function in motor neuron disease. J Neurol Sci 1994; 124(Suppl)64–6
   PubMedGoogle Scholar
• Goonetilleke A, Guiloff RJ. Continuous response variable trial design in motor neuron disease: long-term treatment with a TRH analogue (RX77368). J Neurol Neurosurg Psychiatry. 1995; 58: 201–8
   PubMed Web of Science ®Google Scholar
• Guiloff, RJ, Modarres-Sadeghi, H, Rogers, H. Motor neuron disease: aims and assessment methods in trial design, In:. F Clifford-Rose. Methodological Problems in Clinical Neurologic Trials. Vol. 1. Amyotrophic Lateral Sclerosis. New York, Demos. 1990; 19–31
   Google Scholar
• Guiloff RJ, Goonetilleke A. Longitudinal clinical assessments in motor neuron disease. Relevance to clinical trials. ALS – From Charcot to the Present and into the Future, F Clifford-Rose. Smith-Gordon/Nishimura, London 1994; 73–82
   Google Scholar
• Guiloff RJ, Goonetilleke A. Natural history of amyotrophic lateral sclerosis. Observations with the Charing Cross Amyotrophic Lateral Sclerosis Rating Scales. Adv Neurol. 1995; 68: 185–98
   PubMedGoogle Scholar
• Miller RG, Munsat TL, Swash M, Brooks BR. Consensus guidelines for the design and implementation of clinical trials in ALS. @ WFN Research Committee on Motor Neuron Diseases. J Neurol Sci. 1999; 169: 2–12
   PubMed Web of Science ®Google Scholar
• Dworkin JP. Tongue strength measurement in patients with amyotrophic lateral sclerosis: qualitative versus quantitative procedures. Arch Phys Med Rehab. 1980; 61: 422–4
   PubMed Web of Science ®Google Scholar
• Carrow E, Rivera V, Mauldin M, Shamblin L. Deviant speech characteristic in motor neuron disease. Arch Otolaryngol Head Neck Surg. 1974; 100: 212–8
   Google Scholar
• Riddel J, McCauley RJ, Mulligan M, Tandan R. Intelligibility and phonetic contrast errors in highly intelligible speakers with amyotrophic lateral sclerosis. J Speech Hear Res. 1995; 38: 304–14
   PubMedGoogle Scholar
• Tomik B, Glodzik-Sobanska L, Lechwacka A, Bala-Slodowska M, Kolasa M, Szczudlik A. The application of dysarthria profile tests in ALS patients for the detection of speech disturbances. Neurol Neurochir Pol. 2000; 34: 269–79
   PubMedGoogle Scholar
• SJ Robertson. Robertson Dysarthria Profile. Bicester, Winslow Press. 1982
   Google Scholar
• Langmore SE, Lehman ME. Physiological deficits in the orofacial system underlying dysarthria in amyotrophic lateral sclerosis. J Speech Hear Res. 1994; 37: 28–37
   PubMedGoogle Scholar
• Kent JF, Kent RD, Rosenbek JC, Weismer G, Martin RE, Sufit RL, et al. Quantitative description of dysarthria in women with amyotrophic lateral sclerosis. J Speech Hear Disord. 1992; 3: 723–33
   Google Scholar
• Weismer G, Martin R, Kent RD, Kent JF. Formant trajectory characteristics of males with amyotrophic lateral sclerosis. J Acoust Soc Am. 1992; 1: 1085–98
   Google Scholar
• Tomik B, Krupinski J, Glodzik-Sobanska L, Bala-Slodowska M, Wszolek W, Kusiak M, et al. Acoustic analysis of dysarthria profile in ALS patients. J Neurol Sci. 1999; 169: 35–42
   PubMed Web of Science ®Google Scholar
• Robert D, Pouget J, Giovanni A, Azulay JP, Triglia JM. Quantitative voice analysis in the assessment of bulbar involvement in amyotrophic lateral sclerosis. Acta Otolaryngol. 1999; 119: 724–31
   PubMed Web of Science ®Google Scholar
• Weismer G, Kent RD, Hodge M, Martin R. The acoustic signature for intelligibility test words. J Acoust Soc Am. 1988; 84: 1281–91
   PubMed Web of Science ®Google Scholar
• Silbergleit AK, Johnson AF, Jacobson BH. Acoustic analysis of voice in individuals with amyotrophic lateral sclerosis and perceptually normal vocal quality. J Voice. 1997; 11: 222–31
   PubMed Web of Science ®Google Scholar
• Ramig, L, Scherer, R, Klasner, E, Titz, Horii, Y. Acoustic analysis of voice in amyotrophic lateral sclerosis: a longitudinal case study. J Speech Hear Disord 1990; 55: 2–14
   PubMedGoogle Scholar
• Mulligan M, Carpenter J, Riddel J, Delaney MK, Badger G, Krusinski P, et al. Intelligibility and acoustic characteristics of speech in amyotrophic lateral sclerosis. J Speech Hear Res. 1994; 37: 496–503
   PubMedGoogle Scholar
• Turner GS, Tjaden K. Acoustic differences between content and function words in amyotrophic lateral sclerosis. J Speech Lang Hear Res. 2000; 43: 769–81
   PubMed Web of Science ®Google Scholar
• Enderby PM. Frenchay Dysarthria Assessment. Br J Disord Commun. 1980; 15: 165–73
   Google Scholar
• Yorkston KM, Beukelman DR. Communication efficiency of dysarthric speakers as measured by sentence intelligibility and speaking rate. J Speech Hear Res. 1981; 46: 296–301
   Google Scholar
• Strand EA, Miller RM, Yorkston KM, Hillel AD. Management of oral-pharyngeal dysphagia symptoms in amyotrophic lateral sclerosis. Dysphagia. 1996; 11: 129–39
   PubMed Web of Science ®Google Scholar
• Cobble M. Language impairment in motor neuron disease. J Neurol Sci 1998; 1: S47–52
   Google Scholar
• Abrahams S, Leigh PN, Harvey A, Vythelingum GN, Grise D, Goldstein LH. Verbal fluency and executive dysfunction in amyotrophic lateral sclerosis (ALS). Neuropsychologia. 2000; 38: 734–47
   PubMed Web of Science ®Google Scholar
• Bak TH, Hodges JR. The effects of motor neuron disease on language: further evidence. Brain Lang. 2004; 89: 354–61
   PubMed Web of Science ®Google Scholar
• Caselli RJ, Windebank AJ, Petersen RC, Komori T, Parisi JE, Okazaki H, et al. Rapidly progressive aphasic dementia and motor neuron disease. Ann Neurol. 1993; 33: 200–7
   PubMed Web of Science ®Google Scholar
• Rakowicz WP, Hodges JR. Dementia and aphasia in motor neuron disease: an under-recognized association?. J Neurol Neurosurg Psychiatry. 1998; 65: 881–9
   PubMed Web of Science ®Google Scholar
• Neary D, Snowden JS, Mann DM, Northen B, Goulding PJ, Macdermott N. Frontal lobe dementia and motor neuron disease. J Neurol Neurosurg Psychiatry. 1990; 53: 23–32
   PubMed Web of Science ®Google Scholar
• Gray's Anatomy38th edn. London, Churchill Livingstone. 1995; 1230–58
   Google Scholar
• Jankowska E, Tanaka R. Neuronal mechanism of the disynaptic inhibition evoked in primate spinal motor neurons from the corticospinal tract. Brain Res. 1974; 75: 163–6
   PubMed Web of Science ®Google Scholar
• Lawyer T, Netsky MG. Amyotrophic lateral sclerosis: a clinicoanatomic study of 53 cases. AMA Arch Neurol Psychiatry. 1953; 69: 171–92
   PubMedGoogle Scholar
• Carpenter RJ, McDonald TJ, Howard FM. The otolaryngological presentation of amyotrophic lateral sclerosis. J Otol Rhinol Laryngol. 1978; 86: 479–84
   Google Scholar
• De Paul R, Abbs JH, Caligiuri M, Gracco VL, Brooks BR. Hypoglossal, trigeminal, and facial motor neuron involvement in amyotrophic lateral sclerosis. Neurology. 1988; 38: 281–3
   PubMed Web of Science ®Google Scholar
• Dworkin JP. Tongue strength measurement in patients with amyotrophic lateral sclerosis: qualitative versus quantitative procedures. Arch Phys Med Rehab. 1980; 61: 422–4
   PubMed Web of Science ®Google Scholar
• De Paul R, Brooks BR. Multiple orofacial indices in amyotrophic lateral sclerosis. J Speech Hear Res. 1993; 36: 1158–67
   PubMedGoogle Scholar
• Kent RD, Kent JF, Weismer G, Sufit RL, Rosenbek JC, Martin RE, et al. Impairment of speech intelligibility in men with amyotrophic lateral sclerosis. J Speech Hear Disord. 1990; 55: 721–8
   PubMedGoogle Scholar
• Cha CH, Pattern BM. Amyotrophic lateral sclerosis: abnormalities of the tongue on magnetic resonance imaging. Ann Neurol. 1989; 25: 468–72
   PubMed Web of Science ®Google Scholar
• Andersen PM, Borasio GD, Dengler R, Hardiman O, Kollewe K, Leigh PN, et al. EFNS task force on management of amyotrophic lateral sclerosis: guidelines for diagnosing and clinical care of patients and relatives. Eur J Neurol. 2005; 12: 921–38
   PubMed Web of Science ®Google Scholar
• Yorkston KM. Management of dysarthria in amyotrophic lateral sclerosis. Geriatr Aging. 2002; 5: 38–41
   Google Scholar
• Murphy J. Communication strategies of people with ALS and their partners. Amyotroph Lateral Scler Other Motor Neuron Disord. 2004; 5: 121–6
   PubMed Web of Science ®Google Scholar
• Langton-Hewer R. The management of motor neuron disease. Motor Neuron Disease – Biology and Management, PN Leigh, M Swash. Springer-Verlag, London 1995; 375–406
   Google Scholar
• McHenry M, Whatman J, Pou A. The effect of botulinum toxin A on the vocal symptoms of spastic dysarthria: a case study. J Voice. 2002; 16: 124–31
   PubMed Web of Science ®Google Scholar
• Holden PK, Vokes DE, Taylor MB, Till JA, Crumley RL. Long-term botulinum toxin dose consistency for treatment of adductor spasmodic dysphonia. Ann Otol Rhinol Laryngol. 2007; 116: 891–6
   PubMed Web of Science ®Google Scholar
• Watts CR, Truong DD, Nye C. Evidence for the effectiveness of botulinum toxin for spasmodic dysphonia from high-quality research designs. J Neural Transm. 2008; 115: 625–30
   PubMed Web of Science ®Google Scholar
• Casserly P, Timon C. Botulinum toxin A injection under electromyographic guidance for treatment of spasmodic dysphonia. J Laryngol Otol. 2008; 122: 52–6
   PubMed Web of Science ®Google Scholar
• Watts C, Nye C, Whurr R. Botulinum toxin for treating spasmodic dysphonia (laryngeal dystonia): a systematic Cochrane review. Clin Rehabil. 2006; 20: 112–22
   PubMed Web of Science ®Google Scholar
• Denys EH, Norris FH. Amyotrophic Lateral Sclerosis. Impairment of neuromuscular transmission. Arch Neurol. 1979; 36: 202–5
   PubMed Web of Science ®Google Scholar
• Cui LY, Liu MS, Tang XF. Single fibre electromyography in 78 patients with amyotrophic lateral sclerosis. Chin Med J. 2004; 117: 1830–3
   PubMed Web of Science ®Google Scholar
• Giess R, Naumann M, Werner E, Riemann R, Beck M, Puls I. Injections of botulinum toxin A into the salivary glands improve sialorrhoea in amyotrophic lateral sclerosis. J Neurol Neurosurg Psychiatry. 2000; 69: 121–3
   PubMed Web of Science ®Google Scholar
• Verma A, Steele J. Botulinum toxin improves sialorrhoea and quality of living in bulbar amyotrophic lateral sclerosis. Muscle Nerve. 2006; 34: 235–7
   PubMed Web of Science ®Google Scholar
• Manrique D. Application of botulinum toxin to reduce the saliva in patients with amyotrophic lateral sclerosis. Rev Bras Otorrinolaringol (Engl Ed) 2005; 71: 566–9
   PubMedGoogle Scholar
• Meijer JW, van Kuijk AA, Geurts AC, Schelhaas HJ, Zwarts MJ. Acute deterioration of bulbar function after botulinum toxin treatment for sialorrhoea in amyotrophic lateral sclerosis. Am J Phys Med Rehabil. 2008; 87: 321–4
   PubMed Web of Science ®Google Scholar
• Borasio GD, Shaw PJ, Hardiman O, Ludolph AC, Sales Luis ML, Silani V. European ALS Study Group. Standards of palliative care for patients with amyotrophic lateral sclerosis: results of a European survey. Amyotroph Lateral Scler Other Motor Neuron Disord. 2001; 2: 159–64
   PubMed Web of Science ®Google Scholar
• Gelinas D, Miller RG. A treatable disease: a guide to the management of amyotrophic lateral sclerosis. Amyotrophic Lateral Sclerosis, RHJr Brown, V Meininger, M Swash. Martin Dunitz, London 2000; 405–21
   Google Scholar
• Esposito SJ, Mitsumoto H, Shanks M. Use of palatal lift and palatal augmentation prostheses to improve dysarthria in patients with amyotrophic lateral sclerosis: a case series. J Prosthet Dent. 2000; 83: 90–8
   PubMed Web of Science ®Google Scholar
• Gonzalez JB, Aronson AE. Palatal lift prosthesis for treatment of anatomical and neurological palatopharyngeal insufficiency. Cleft Palate J. 1970; 7: 91–103
   Google Scholar
• Enderby, P, Hathorn, IS, Servant, S. Use of intra-oral appliances in the management of acquired velopharyngeal disorders. British Dental J 1984;157: 157–9
   PubMedGoogle Scholar
• Ono T, Hamamura M, Honda K, Nokubi T. Collaboration of a dentist and speech-language pathologist in the rehabilitation of a stroke patient with dysarthria: a case study. Gerodontology. 2005; 22: 116–9
   PubMedGoogle Scholar
• Suwaki M, Nanba K, Ito E, Kumakura I, Minagi S. Nasal speaking valve: a device for managing velopharyngeal incompetence. J Oral Rehabil. 2008; 35: 73–7
   PubMed Web of Science ®Google Scholar
• Ball LJ, Beukelman DR, Pattee GL. Communication effectiveness of individuals with amyotrophic lateral sclerosis. J Commun Disord. 2004; 37: 197–215
   PubMed Web of Science ®Google Scholar
• ALS Association (ALSA), www.alsa.org.
   Google Scholar
• Nijboer F, Sellers EW, Mellinger J, Jordan MA, Matuz T, Furdea A. AP300-based brain-computer interface for people with amyotrophic lateral sclerosis. Clin Neurophysiol. 2008; 119: 1909–16
   PubMed Web of Science ®Google Scholar
• American Thoracic Society Documents. Respiratory care of the patient with Duchenne Muscular Dystrophy. ATS Consensus Statement. Am J Respir Crit Care Med 2004; 170: 456–65
   PubMed Web of Science ®Google Scholar
• Polkey MI, Lyall RA, Moxham J, Liegh PN. Respiratory aspects of neurological disease. J Neurol Neurosurg Psychiatry. 1999; 66: 5–15
   PubMed Web of Science ®Google Scholar
• Sherman MS, Paz HL. Review of respiratory care of the patient with amyotrophic lateral sclerosis. Respiration. 1994; 61: 61–7
   PubMed Web of Science ®Google Scholar
• Guger C, Ramoser H, Pfurtscheller G. Real-time EEG analysis with subject-specific spatial patterns for a brain-computer interface (BCI). IEEE Trans Neural Syst Rehabil Eng. 2000; 8: 447–56
   Google Scholar
• Kubler A, Kotchoubey B, Kaiser J, Wolpaw JR, Birbaumer N. Brain-computer communication: unlocking the locked in. Psychol Bull. 2001; 127: 358–75
   PubMed Web of Science ®Google Scholar
• Neumann N, Kublerm A. Training locked-in patients: a challenge for the use of brain-computer interfaces. IEEE Trans Neural Syst Rehabil Eng. 2003; 11: 169–72
   PubMed Web of Science ®Google Scholar
• Neumann N, Hinterberger T, Kaiser J, Leins U, Birbaumer N, Kubler A. Automatic processing of self-regulation of slow cortical potentials: evidence from brain-computer communication in paralysed patients. Clin Neurophysiol. 2004; 115: 628–35
   PubMed Web of Science ®Google Scholar
• Kaiser J, Perelmouter J, Iversen IH, Neumann N, Ghanayim N, Hinterberger T, et al. Self-initiation of EEG-based communication in paralysed patients. Clin Neurophysiol. 2001; 112: 551–4
   PubMed Web of Science ®Google Scholar
• Rohde MM, BeMent SL, Huggins JE, Levine SP, Kushwaha RK, Schuh LA. Quality estimation of subdurally recorded, event-related potentials based on signal-to-noise ratio. IEEE Trans Biomed Eng. 2002; 49: 31–40
   PubMed Web of Science ®Google Scholar
• Abrahams S, Leigh PN, Harvey A, Vythelingum GN, Grisé D, Goldstein LH. Verbal fluency and executive dysfunction in amyotrophic lateral sclerosis (ALS). Neuropsychologia. 2000; 38: 734–47
   PubMed Web of Science ®Google Scholar
• Bak TH, Hodges JR. The effects of motor neuron disease on language: further evidence. Brain Lang. 2004; 89: 354–61
   PubMed Web of Science ®Google Scholar
• Abrahams S, Leigh PN, Goldstein LH. Cognitive change in ALS: a prospective study. Neurology. 2005; 64: 1222–6
   PubMed Web of Science ®Google Scholar
• Flaherty-Craig C, Eslinger P, Stephens B, Simmons Z. A rapid screening battery to identify frontal dysfunction in patients with ALS. Neurology. 2006; 67: 2070–2
   PubMed Web of Science ®Google Scholar
• Lomen-Hoerth C, Murphy J, Langmore S, Kramer JH, Olney RK, Miller B. Are amyotrophic lateral sclerosis patients cognitively normal?. Neurology. 2003; 60: 1094–7
   PubMed Web of Science ®Google Scholar