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Central Auditory Deficits After Temporal Lobectomy

Central Auditory Deficits After Temporal Lobectomy Abstract Dichotic simultaneous and time-staggered speech perception data from four patients with temporal lobectomies are compared to results from over 100 normals. In these tests, two different nonsense syllables are given in competition, one to each ear. The syllables are presented simultaneously, then with time separations ranging from 15 to 500 msec. With simultaneous onset, normals showed right ear superiority; with time separations of 30 to 90 msec, normals showed a "lag effect," ie, better scores for the trailing stimulus. In sharp contrast, temporal lobectomy patients showed poorer contralateral ear function than ipsilateral ear function, and no lag effect. Comparing preoperative and postoperative scores, we see that postoperatively there is additional degradation of contralateral ear scores and enhanced ipsilateral ear function in dichotic listening. Patients with both left and right temporal lobectomies behaved similarly in this respect. References 1. Penfield W, Roberts L: Speech and Brain Mechanisms . Princeton, NJ, Princeton University Press, 1959. 2. Kimura D: Cerebral dominance and the perception of verbal stimuli . Canad J Psychol 15:166-171, 1961.Crossref 3. Geschwind N, Levitsky W: Human brain: Left-right asymmetries in temporal speech region . Science 161:186-187, 1968.Crossref 4. Studdert-Kennedy M, Shankweiler D: Hemispheric specialization of speech perception . J Acoust Soc Amer 48:579-594, 1970.Crossref 5. Wada J, Rasmussen T: Intracarotid injection of sodium amytal for the lateralization of cerebral speech dominance . J Neurosurg 17:266-282, 1960.Crossref 6. Efron R: The effect of handedness on the perception of simultaneity and temporal order . Brain 86:261-284, 1963a.Crossref 7. Efron R: Temporal perception, aphasia, and déjà vu . Brain 86:403-424, 1963b.Crossref 8. Jerger J, Weikers NJ, Sharbrough FW III, et al: Bilateral lesions of the temporal lobe . Acta Otolaryng , (suppl 258) , 1969. 9. Berlin CI, Lowe SS: Temporal dichotic factors in central auditory testing, in Katz J (ed): Handbook of Clinical Audiology, Baltimore, Williams & Wilkins Co, to be published. 10. Milner B, Taylor L, Sperry R: Lateralized suppression of dichotically presented digits after commissural section in man . Science 161:184-185, 1968.Crossref 11. Sparks R, Goodglass H, Nickel B: Ipsilateral versus contralateral extinction in dichotic listening resulting from hemisphere lesions . Cortex 6:249-260, 1970.Crossref http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Otolaryngology American Medical Association

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Publisher
American Medical Association
Copyright
Copyright © 1972 American Medical Association. All Rights Reserved.
ISSN
0003-9977
DOI
10.1001/archotol.1972.00770090042003
Publisher site
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Abstract

Abstract Dichotic simultaneous and time-staggered speech perception data from four patients with temporal lobectomies are compared to results from over 100 normals. In these tests, two different nonsense syllables are given in competition, one to each ear. The syllables are presented simultaneously, then with time separations ranging from 15 to 500 msec. With simultaneous onset, normals showed right ear superiority; with time separations of 30 to 90 msec, normals showed a "lag effect," ie, better scores for the trailing stimulus. In sharp contrast, temporal lobectomy patients showed poorer contralateral ear function than ipsilateral ear function, and no lag effect. Comparing preoperative and postoperative scores, we see that postoperatively there is additional degradation of contralateral ear scores and enhanced ipsilateral ear function in dichotic listening. Patients with both left and right temporal lobectomies behaved similarly in this respect. References 1. Penfield W, Roberts L: Speech and Brain Mechanisms . Princeton, NJ, Princeton University Press, 1959. 2. Kimura D: Cerebral dominance and the perception of verbal stimuli . Canad J Psychol 15:166-171, 1961.Crossref 3. Geschwind N, Levitsky W: Human brain: Left-right asymmetries in temporal speech region . Science 161:186-187, 1968.Crossref 4. Studdert-Kennedy M, Shankweiler D: Hemispheric specialization of speech perception . J Acoust Soc Amer 48:579-594, 1970.Crossref 5. Wada J, Rasmussen T: Intracarotid injection of sodium amytal for the lateralization of cerebral speech dominance . J Neurosurg 17:266-282, 1960.Crossref 6. Efron R: The effect of handedness on the perception of simultaneity and temporal order . Brain 86:261-284, 1963a.Crossref 7. Efron R: Temporal perception, aphasia, and déjà vu . Brain 86:403-424, 1963b.Crossref 8. Jerger J, Weikers NJ, Sharbrough FW III, et al: Bilateral lesions of the temporal lobe . Acta Otolaryng , (suppl 258) , 1969. 9. Berlin CI, Lowe SS: Temporal dichotic factors in central auditory testing, in Katz J (ed): Handbook of Clinical Audiology, Baltimore, Williams & Wilkins Co, to be published. 10. Milner B, Taylor L, Sperry R: Lateralized suppression of dichotically presented digits after commissural section in man . Science 161:184-185, 1968.Crossref 11. Sparks R, Goodglass H, Nickel B: Ipsilateral versus contralateral extinction in dichotic listening resulting from hemisphere lesions . Cortex 6:249-260, 1970.Crossref

Journal

Archives of OtolaryngologyAmerican Medical Association

Published: Jul 1, 1972

References