TY - JOUR
T1 - Intervention-specific patterns of cortical function plasticity during auditory encoding in people with schizophrenia
AU - Dale, Corby L.
AU - Brown, Ethan G.
AU - Herman, Alexander B.
AU - Hinkley, Leighton B.N.
AU - Subramaniam, Karuna
AU - Fisher, Melissa
AU - Vinogradov, Sophia
AU - Nagarajan, Srikantan S.
N1 - Publisher Copyright:
© 2019 The Authors
PY - 2020/1
Y1 - 2020/1
N2 - Schizophrenia is a neurocognitive illness characterized by behavioral and neural impairments in both early auditory processing and higher order verbal working memory. Previously we have shown intervention-specific cognitive performance improvements with computerized, targeted training of auditory processing (AT) when compared to a computer games (CG) control intervention that emphasized visual processing. To investigate spatiotemporal changes in patterns of neural activity specific to the AT intervention, the current study used magnetoencephalography (MEG) imaging to derive induced high gamma band oscillations (HGO) during auditory encoding, before and after 50 h (∼10 weeks) of exposure to either the AT or CG intervention. During stimulus encoding, AT intervention-specific changes in high gamma activity occurred in left middle frontal and left middle-superior temporal cortices. In contrast, CG intervention-specific changes were observed in right medial frontal and supramarginal gyri during stimulus encoding, and in bilateral temporal cortices during response preparation. These data reveal that, in schizophrenia, intensive exposure to either training of auditory processing or exposure to visuospatial activities produces significant but complementary patterns of cortical function plasticity within a distributed fronto-temporal network. These results underscore the importance of delineating the specific neuroplastic effects of targeted behavioral interventions to ensure desired neurophysiological changes and avoid unintended consequences on neural system functioning.
AB - Schizophrenia is a neurocognitive illness characterized by behavioral and neural impairments in both early auditory processing and higher order verbal working memory. Previously we have shown intervention-specific cognitive performance improvements with computerized, targeted training of auditory processing (AT) when compared to a computer games (CG) control intervention that emphasized visual processing. To investigate spatiotemporal changes in patterns of neural activity specific to the AT intervention, the current study used magnetoencephalography (MEG) imaging to derive induced high gamma band oscillations (HGO) during auditory encoding, before and after 50 h (∼10 weeks) of exposure to either the AT or CG intervention. During stimulus encoding, AT intervention-specific changes in high gamma activity occurred in left middle frontal and left middle-superior temporal cortices. In contrast, CG intervention-specific changes were observed in right medial frontal and supramarginal gyri during stimulus encoding, and in bilateral temporal cortices during response preparation. These data reveal that, in schizophrenia, intensive exposure to either training of auditory processing or exposure to visuospatial activities produces significant but complementary patterns of cortical function plasticity within a distributed fronto-temporal network. These results underscore the importance of delineating the specific neuroplastic effects of targeted behavioral interventions to ensure desired neurophysiological changes and avoid unintended consequences on neural system functioning.
KW - Cognitive training
KW - Linguistic processing
KW - Magnetoencephalography
KW - Neuroplasticity
UR - http://www.scopus.com/inward/record.url?scp=85073815225&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85073815225&partnerID=8YFLogxK
U2 - 10.1016/j.schres.2019.10.022
DO - 10.1016/j.schres.2019.10.022
M3 - Article
C2 - 31648842
AN - SCOPUS:85073815225
SN - 0920-9964
VL - 215
SP - 241
EP - 249
JO - Schizophrenia Research
JF - Schizophrenia Research
ER -