open access

Vol 49, No 2 (2015)
Original research articles
Submitted: 2015-01-25
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Emotional prosody expression in acoustic analysis in patients with right hemisphere ischemic stroke

Konstanty Guranski, Ryszard Podemski
DOI: 10.1016/j.pjnns.2015.03.004
·
Neurol Neurochir Pol 2015;49(2):113-120.

open access

Vol 49, No 2 (2015)
Original research articles
Submitted: 2015-01-25

Abstract

Objectives

The role of the right cerebral hemisphere in nonverbal speech activities remains controversial. Most research supports the dominant role of the right hemisphere in the control of emotional prosody. There has been significant discussion of the participation of cortical and subcortical structures of the right hemisphere in the processing of various acoustic speech parameters. The aim of this study was an acoustic analysis of the speech parameters during emotional expression in right hemisphere ischemic strokes with an attempt to reference the results to lesion location.

Materials and methods

Acoustic speech analysis was conducted on forty-six right-handed patients with right-middle cerebral artery stroke, together with 34 age-matched people in the control group. We compared the results of acoustic studies between patients with varying infarct locations and the control group.

Results

Variations in fundamental frequency during verbal expression of joy, anger and sadness were significantly smaller in the patient group than in the control group. Cortical lesion caused more restrictions in fundamental frequency variation in the expression of joy and a lower voice intensity in expressions of anger and joy compared to those patients with subcortical lesions.

Conclusions

Cortical lesion was associated with a more impaired expression of emotional prosody than subcortical lesion. The results indicate the leading role of the cortical structures of the right hemisphere in the expression of emotional prosody.

Abstract

Objectives

The role of the right cerebral hemisphere in nonverbal speech activities remains controversial. Most research supports the dominant role of the right hemisphere in the control of emotional prosody. There has been significant discussion of the participation of cortical and subcortical structures of the right hemisphere in the processing of various acoustic speech parameters. The aim of this study was an acoustic analysis of the speech parameters during emotional expression in right hemisphere ischemic strokes with an attempt to reference the results to lesion location.

Materials and methods

Acoustic speech analysis was conducted on forty-six right-handed patients with right-middle cerebral artery stroke, together with 34 age-matched people in the control group. We compared the results of acoustic studies between patients with varying infarct locations and the control group.

Results

Variations in fundamental frequency during verbal expression of joy, anger and sadness were significantly smaller in the patient group than in the control group. Cortical lesion caused more restrictions in fundamental frequency variation in the expression of joy and a lower voice intensity in expressions of anger and joy compared to those patients with subcortical lesions.

Conclusions

Cortical lesion was associated with a more impaired expression of emotional prosody than subcortical lesion. The results indicate the leading role of the cortical structures of the right hemisphere in the expression of emotional prosody.

Get Citation

Keywords

Emotional prosody, Right hemisphere, Acoustic speech analysis

About this article
Title

Emotional prosody expression in acoustic analysis in patients with right hemisphere ischemic stroke

Journal

Neurologia i Neurochirurgia Polska

Issue

Vol 49, No 2 (2015)

Pages

113-120

DOI

10.1016/j.pjnns.2015.03.004

Bibliographic record

Neurol Neurochir Pol 2015;49(2):113-120.

Keywords

Emotional prosody
Right hemisphere
Acoustic speech analysis

Authors

Konstanty Guranski
Ryszard Podemski

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