Imitation of para-phonological detail following left hemisphere lesions.
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Imitation of para-phonological detail following left hemisphere lesions. / Kappes, Juliane; Baumgärtner, Annette; Peschke, Claudia; Goldenberg, Georg; Ziegler, Wolfram.
In: NEUROPSYCHOLOGIA, Vol. 48, No. 4, 4, 2010, p. 1115-1124.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Imitation of para-phonological detail following left hemisphere lesions.
AU - Kappes, Juliane
AU - Baumgärtner, Annette
AU - Peschke, Claudia
AU - Goldenberg, Georg
AU - Ziegler, Wolfram
PY - 2010
Y1 - 2010
N2 - Imitation in speech refers to the unintentional transfer of phonologically irrelevant acoustic-phonetic information of auditory input into speech motor output. Evidence for such imitation effects has been explained within the framework of episodic theories. However, it is largely unclear, which neural structures mediate speech imitation and how imitation is related with verbal repetition. Two experiments were conducted, a standard repetition task, and a transformation task requiring phonetic manipulation of the presented auditory nonword stimuli. Nonword materials varied sub-phonemically in word stress (pitch elevation magnitude; PEM) and in a parameter related to speaking style, i.e., the explicitness of final schwa-syllables (SSE). We examined speech imitation in 10 healthy participants, 10 patients with phonological impairments after left hemisphere lesions, and 11 patients with right hemisphere lesions. In repetition, significant imitation of SSE and PEM was observed in all groups of participants. In transformation, imitation occurred in healthy participants and in the patients with right hemisphere lesions, whereas no imitation was observed in the patient group with left hemisphere lesions. Voxel-based lesion-symptom mapping revealed that different areas within the left temporal plane influenced the degree of imitation of phonetic and prosodic detail in repetition.
AB - Imitation in speech refers to the unintentional transfer of phonologically irrelevant acoustic-phonetic information of auditory input into speech motor output. Evidence for such imitation effects has been explained within the framework of episodic theories. However, it is largely unclear, which neural structures mediate speech imitation and how imitation is related with verbal repetition. Two experiments were conducted, a standard repetition task, and a transformation task requiring phonetic manipulation of the presented auditory nonword stimuli. Nonword materials varied sub-phonemically in word stress (pitch elevation magnitude; PEM) and in a parameter related to speaking style, i.e., the explicitness of final schwa-syllables (SSE). We examined speech imitation in 10 healthy participants, 10 patients with phonological impairments after left hemisphere lesions, and 11 patients with right hemisphere lesions. In repetition, significant imitation of SSE and PEM was observed in all groups of participants. In transformation, imitation occurred in healthy participants and in the patients with right hemisphere lesions, whereas no imitation was observed in the patient group with left hemisphere lesions. Voxel-based lesion-symptom mapping revealed that different areas within the left temporal plane influenced the degree of imitation of phonetic and prosodic detail in repetition.
KW - Adult
KW - Humans
KW - Male
KW - Aged
KW - Female
KW - Middle Aged
KW - Neuropsychological Tests
KW - Speech
KW - Magnetic Resonance Imaging
KW - Imitative Behavior
KW - Brain pathology
KW - Case-Control Studies
KW - Photic Stimulation methods
KW - Functional Laterality
KW - Acoustic Stimulation methods
KW - Phonetics
KW - Brain Infarction complications
KW - Discrimination (Psychology)
KW - Language Tests
KW - Psychomotor Performance
KW - Speech Perception
KW - Verbal Behavior
KW - Adult
KW - Humans
KW - Male
KW - Aged
KW - Female
KW - Middle Aged
KW - Neuropsychological Tests
KW - Speech
KW - Magnetic Resonance Imaging
KW - Imitative Behavior
KW - Brain pathology
KW - Case-Control Studies
KW - Photic Stimulation methods
KW - Functional Laterality
KW - Acoustic Stimulation methods
KW - Phonetics
KW - Brain Infarction complications
KW - Discrimination (Psychology)
KW - Language Tests
KW - Psychomotor Performance
KW - Speech Perception
KW - Verbal Behavior
M3 - SCORING: Zeitschriftenaufsatz
VL - 48
SP - 1115
EP - 1124
JO - NEUROPSYCHOLOGIA
JF - NEUROPSYCHOLOGIA
SN - 0028-3932
IS - 4
M1 - 4
ER -
