Thursday, November 21, 2024 11/21/2024

The Role of Frontal and Temporal Brain Areas in the Perception of Phonetic Category Structure

Award Number: R01DC013064
ORGANIZATION: NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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ABSTRACT/PROJECT SUMMARY Successful language comprehension requires mapping a complex and variable acoustic signal onto meaningful units. Many studies show that perception of the speech signal recruits both left and right hemisphere temporal brain regions, yet only individuals with left hemisphere damage typically have deficits in processing sound structure that impact comprehension. A persistent mystery is the role of the right hemisphere in speech perception. In the current proposal, we test two key hypotheses about the role of the right hemisphere in speech sound processing. In Aim 1, a series of studies test the hypothesis that right and left temporal lobes differ in the precision with which they respond to speech, with left hemisphere showing sharp, categorical responses and the right having less precise and more gradient responses to speech. In Aim 2, motivated by work from the last grant cycle, we test the role of the right hemisphere in a process that is key to efficient language processing: learning the specific phonetic qualities of talkers. We approach these questions using converging methods, using neural decoding techniques on functional neuroimaging (fMRI) data to measure differences in neural tuning to phonetic stimuli, implementing a “virtual lesion” approach using transcranial magnetic stimulation (TMS) to examine the consequences of left and right hemisphere disruption, and testing individuals with right and left temporal lesions to understand the functional consequences of damage to the systems supporting speech perception in both hemispheres. In concert, this work will delineate the neural systems that support efficient and flexible processing of the speech signal. This grant’s innovation stems from its multi-method approach and the focus on right hemisphere function, a neglected component of the language architecture. Finally, this line of work will inform successful remediation of stroke, revealing the roles and functions of spared left and right hemisphere systems that can be leveraged for therapeutic purposes.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2024 ( Subtotal = $556,303 )
2024	2024	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	000	9	7/11/2024	NON-COMPETING CONTINUATION	$470,622
2024	2024	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	001	9	8/14/2024	SUPPLEMENT FOR EXPANSION	$85,681
														Subtotal = $556,303

Issue Date FY: 2023 ( Subtotal = $471,479 )
2023	2023	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	000	8	7/19/2023	NON-COMPETING CONTINUATION	$471,479
														Subtotal = $471,479

Issue Date FY: 2022 ( Subtotal = $477,819 )
2022	2022	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	002	7	7/21/2022	NON-COMPETING CONTINUATION	$477,819
2022	2021	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	001	6	2/22/2022	COMPETING CONTINUATION	$107,259
2022	2018	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	000	5	2/22/2022	NON-COMPETING CONTINUATION	-$107,259
														Subtotal = $477,819

Issue Date FY: 2021 ( Subtotal = $515,784 )
2021	2021	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	002	6	7/9/2021	COMPETING CONTINUATION	$515,784
2021	2018	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	000	5	1/15/2021	NON-COMPETING CONTINUATION	$0
2021	2018	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	001	5	7/9/2021	NON-COMPETING CONTINUATION	$0
														Subtotal = $515,784

Issue Date FY: 2020 ( Subtotal = $0 )
2020	2018	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	000	5	1/31/2020	NON-COMPETING CONTINUATION	$0
														Subtotal = $0

Issue Date FY: 2018 ( Subtotal = $380,192 )
2018	2018	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	001	5	4/5/2018	NON-COMPETING CONTINUATION	$38,020
2018	2018	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	000	5	2/16/2018	NON-COMPETING CONTINUATION	$342,172
														Subtotal = $380,192

Issue Date FY: 2017 ( Subtotal = $381,081 )
2017	2017	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	000	4	2/15/2017	NON-COMPETING CONTINUATION	$342,972
2017	2017	UNIVERSITY OF CONNECTICUT	438 WHITNEY RD EXTENSION UNIT 1133	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	001	4	5/24/2017	NON-COMPETING CONTINUATION	$38,109
														Subtotal = $381,081

Issue Date FY: 2016 ( Subtotal = $381,918 )
2016	2016	UNIVERSITY OF CONNECTICUT	438 WHITNEY ROAD EXTENSION	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	000	3	2/26/2016	NON-COMPETING CONTINUATION	$381,918
														Subtotal = $381,918

Issue Date FY: 2015 ( Subtotal = $385,720 )
2015	2015	UNIVERSITY OF CONNECTICUT	438 WHITNEY ROAD EXTENSION	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	000	2	2/18/2015	NON-COMPETING CONTINUATION	$385,720
														Subtotal = $385,720

Issue Date FY: 2014 ( Subtotal = $379,463 )
2014	2014	UNIVERSITY OF CONNECTICUT	438 WHITNEY ROAD EXTENSION	STORRS	CT	06269	CAPITOL	USA	Research Related to Deafness and Communication Disorders	000	1	2/17/2014	NEW	$379,463
														Subtotal = $379,463

Grand Total All Awards = $3,929,759

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The Role of Frontal and Temporal Brain Areas in the Perception of Phonetic Category Structure

Award Number: R01DC013064

ORGANIZATION: NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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