Observational Study
Copyright ©The Author(s) 2025.
World J Psychiatry. Aug 19, 2025; 15(8): 107860
Published online Aug 19, 2025. doi: 10.5498/wjp.v15.i8.107860
Table 1 Comparison of general demographic information between groups
mean ± SD
OCD (n = 33)
HC (n = 26)
t/χ2
P value
Sex (male)16110.150.78
Age32.24 ± 7.3828.23 ± 7.361.980.06
Education15.18 ± 2.0715.45 ± 1.76-0.930.61
Age at onset24.56 ± 9.15///
Duration (months)84.12 ± 79.15///
Y-BOCS total25.81 ± 4.78///
Y-BOCS obsession13.03 ± 2.91///
Y-BOCS compulsion12.88 ± 3.48///
HAMD12.94 ± 5.801.09 ± 1.4411.060.000b
HAMA9.42 ± 3.800.77 ± 1.1111.340.000b
Table 2 Seed points of the default mode, dorsal attention, frontoparietal, and salience networks

Abbreviation
X (L/R)
Y (L/R)
Z (L/R)
DMN
    Dorsal medial prefrontal cortexdmPFC-85034
    Ventral medial prefrontal cortexvmPFC-244-12
    Posterior cingulate cortexPCC-2-4828
    PrecuneusPcu-2-6050
    Superior frontal gyrusSFG-8/1220/1862/62
    Inferior frontal gyrusIFG-42/5026/30-14/-6
DAN
    Frontal eye fieldsFEF-24/242/-262/56
    Superior occipital gyrusSOG-18/26-66/-6450/54
FPN
    Anterior inferior parietal lobuleaIPL-54/50-48/-4448/46
    Dorsolateral prefrontal cortexDLPFC-38/4432/4230/26
SAN
    Anterior insulaaINS-30/3220/20-2/-4
    Dorsal anterior cingulate cortexdACC63040
Table 3 Comparison of demographic information before and after group cognitive-behavioral therapy treatment

Before (n = 33)
After (n = 21)
t
P value
Sex (male)1611//
Age32.24 ± 7.3832.50 ± 7.22-0.3150.75
Education15.18 ± 2.0716.04 ± 1.850.170.87
Age at onset24.56 ± 9.1524.32 ± 9.07-0.370.72
Y-BOCS total25.81 ± 4.7816.41 ± 6.706.650.000b
Y-BOCS obsession13.03 ± 2.918.59 ± 3.115.400.000b
Y-BOCS compulsion12.88 ± 3.487.82 ± 4.475.370.000b
HAMD12.94 ± 5.806.83 ± 4.502.910.005a
HAMA9.42 ± 3.805.11 ± 3.253.410.001a
Table 4 Comparison of neuropsychological assessment results between groups

OCD (n = 33)
HC (n = 26)
t
P value
MoCA-BMoCA-B27.79 ± 1.5929.00 ± 0.87-3.250.002a
Visuospatial abilityRey-O emulation time (second)160 ± 80.67128.63 ± 48.441.670.100
Rey-O recall time (second)79.57 ± 40.1087.63 ± 25.01-0.840.404
Rey-O recall score15.26 ± 7.9721.27 ± 6.18-2.990.004a
Rey-O recall organization score4.53 ± 1.775.41 ± 1.10-2.270.027a
MemoryAVLT-N14.12 ± 1.604.36 ± 1.22-0.600.548
AVLT-N25.94 ± 2.017.18 ± 1.26-2.810.007a
AVLT-N37.00 ± 2.198.55 ± 1.99-2.650.011a
AVLT-N4 short-delayed recall5.73 ± 2.187.36 ± 2.01-2.810.007a
AVLT-N5 long-delayed recall5.30 ± 2.427.05 ± 2.06-2.770.008a
AVLT-N65.45 ± 2.477.36 ± 1.89-3.070.008a
AVLT-reaccreditation9.82 ± 2.1110.91 ± 1.07-2.520.015a
AttentionSDMT-correct count53.03 ± 12.4761.18 ± 7.71-2.990.004a
SDMT-error count0.30 ± 0.630.72 ± 1.24-1.470.150
PASAT-correct count32.79 ± 4.1335.77 ± 2.93-2.930.005a
DST-recite along9.61 ± 1.329.59 ± 1.010.050.964
DST-recite backwards5.94 ± 1.697.05 ± 1.79-2.320.024a
DST total score15.54 ± 2.6716.64 ± 2.42-1.540.129
Executive functionSCWT-A (second)21.27 ± 4.8319.96 ± 3.431.180.24
SCWT-B (second)34.27 ± 10.8628.32 ± 3.752.900.006a
SCWT-C (second)63.76 ± 22.3956.45 ± 9.931.440.157
SCWT-C error count0.46 ± 1.300.73 ± 2.33-0.560.581
STT-A practice (second)7.33 ± 3.277.09 ± 3.540.260.791
STT-A test (second)39.30 ± 12.5932.18 ± 8.802.300.025a
STT-B practice (second)13.18 ± 5.0410.59 ± 1.992.670.011a
STT-B test (second)85.21 ± 22.7970.96 ± 13.622.900.005a
CCST spontaneous classification4.36 ± 1.246.22 ± 1.02-5.830.000b
CCST classification of leads8.79 ± 1.537.86 ± 1.811.970.056
CCST total classification13.15 ± 2.0914.09 ± 2.07-1.630.107
Tower of Hanoi: Three discs moving steps12.31 ± 4.468.82 ± 2.383.720.001a
Time (second)40.50 ± 20.3523.36 ± 17.393.220.002a
Tower of Hanoi: Four discs moving steps23.97 ± 5.9922.09 ± 6.931.060.293
Time (second)82.03 ± 33.9362.04 ± 32.242.170.035a
Tower of Hanoi: Five discs moving steps52.42 ± 9.6742.23 ± 6.294.320.000b
Time (second)171.16 ± 58.92111.91 ± 29.404.810.000b
SpeechSurname and city alternate correct number26.81 ± 5.8534.18 ± 5.79-4.560.000b
Surname correct number13.22 ± 3.4717.77 ± 4.43-4.230.000b
City correct number13.59 ± 3.9116.41 ± 4.46-2.460.017a
Number of errors1.22 ± 2.150.91 ± 1.630.570.570
Repetition number2.91 ± 4.601.36 ± 2.171.650.106
Animal and fruit alternate correct number15.97 ± 3.4018.14 ± 3.06-2.410.020a
Number of errors0.21 ± 0.480.55 ± 0.91-1.570.127
Repetition number0.09 ± 0.290.41 ± 1.10-1.320.197
Table 5 Changes in neuropsychological assessments before and after treatment
Cognitive function
Test
Before GCBT
After GCBT
t
P value
Visuospatial abilityRey-O emulation time (second)160.73 ± 80.6787.56 ± 21.482.670.000b
Rey-O recall score15.26 ± 7.9721.00 ± 5.45-2.030.049
MemoryALVT-N14.12 ± 1.606.11 ± 1.62-3.310.002
ALVT-N25.94 ± 2.017.56 ± 1.94-2.150.038
ALVT-N37.00 ± 2.199.22 ± 1.64-2.820.007
ALVT-N45.73 ± 2.188.56 ± 1.67-3.600.001
ALVT-N55.30 ± 2.428.11 ± 1.69-3.260.002
ALVT-N65.45 ± 2.488.33 ± 1.73-3.260.002
AttentionSDMT correct number53.03 ± 12.4763.33 ± 12.07-2.210.033
Executive functionSTT-A time (second)39.30 ± 12.5929.89 ± 10.002.070.045
CCST total score13.15 ± 2.0915.22 ± 1.30-2.810.008
Time taken to move four discs (second)82.03 ± 33.9333.44 ± 11.296.860.000b
Table 6 Comparison of default mode network, dorsal attention network, frontoparietal network, and salience network intra- and inter-network functional connectivity before and after group cognitive-behavioral therapy

Before-GCBT
After-GCBT
t
P value
Intra-network
    DMN
        dmPFC-vmPFC0.38 ± 0.240.22 ± 0.232.370.022
        vmPFC-LSFG0.22 ± 0.200.09 ± 0.202.180.035
        vmPFC-LIFG0.33 ± 0.240.13 ± 0.262.680.010
        Pcu-RIFG0.23 ± 0.220.06 ± 0.202.700.010
        LIFG-RIFG0.62 ± 0.250.43 ± 0.183.000.004
    DAN
        LFEF-LSOG0.50 ± 0.280.35 ± 0.242.040.047
        LFEF-RSOG0.37 ± 0.260.15 ± 0.253.010.003a
Inter-network
    DMN-DAN
        vmPFC-RFEF0.13 ± 0.22-0.04 ± 0.162.990.004a
        vmPFC-RSOG0.16 ± 0.220.04 ± 0.152.170.035
        RIFG-LFEF0.20 ± 0.260.04 ± 0.242.030.048
        RIFG-RFEF0.25 ± 0.270.10 ± 0.192.170.035
        RIFG-RSOG0.22 ± 0.210.08 ± 0.212.260.028
    DMN-FPN
        LSFG-LDLPFC0.03 ± 0.24-0.13 ± 0.232.260.029
        RIFG-RaIPL0.20 ± 0.26-0.01 ± 0.262.620.012
        RIFG-LDLPFC0.24 ± 0.28-0.00 ± 0.263.020.004
        RIFG-RDLPFC0.04 ± 0.21-0.19 ± 0.213.850.000b
        RIFG-RDLPFC0.04 ± 0.21-0.19 ± 0.213.850.000b
    DMN-SAN
        LSFG-dACC0.20 ± 0.250.03 ± 0.212.470.017
        LIFG-LaINS0.24 ± 0.240.11 ± 0.192.110.040
        RIFG-LaINS0.07 ± 0.170.34 ± 0.285.130.000b
        RIFG-RaINS0.34 ± 0.280.09 ± 0.193.530.001a
        RIFG-dACC0.34 ± 0.290.09 ± 0.263.130.003a
    DAN-SAN
        RFEF-RaINS0.34 ± 0.200.20 ± 0.132.910.005a
        LSOG-LaINS0.29 ± 0.230.12 ± 0.262.380.022
        LSOG-RaINS0.24 ± 0.200.11 ± 0.232.090.043
Table 7 Correlations between functional connectivity and neuropsychological assessments after group cognitive-behavioral therapy
dmPFC-vmPFC
VmPFC-RSOG
LIFG-LaINS
RIFG-LDLPFC
vmPFC-LIFG
LFEF-LSOG
LSOG-LaINS
LIFG-RIFG
DMN
DMN-DAN
DMN-SAN
DMN-FPN
DMN
DAN
DAN-SAN
DMN
r
P value
r
P value
r
P value
r
P value
r
P value
r
P value
r
P value
r
P value
Rey-O emulation time-0.840.010-0.870.005a
Rey-O recall score-0.730.042a-0.860.006a
AVLT-N1-0.870.005a
AVLT-N4-0.790.019a
SDMT correct number-0.760.028a-0.770.025a
STT-A test0.700.0500.780.022a0.770.024a
CCST score-0.800.016a-0.760.024a
Tower of Hanoi: Three discs moving steps-0.730.040a-0.890.003a0.740.036a
Time taken to move the three discs (second)0.860.006a
Tower of Hanoi: Four discs moving steps0.770.024a
Time taken to move the four discs (second)0.850.007a