Key result
Operant conditioning over 24 sessions successfully increased the soleus H-reflex to 140% of baseline in HRup subjects and decreased it to 69% of baseline in HRdown subjects.
Population
15 healthy adults with no history of neurological disease or injury. 8 assigned to HRup and 9 assigned to…
Comparison
Operant conditioning to increase or decrease the… vs Baseline H-reflex size and within-session…
Design
Other, Randomly assigned to the HRup conditioning group or HRdown group.
Follow-up
10 weeks of conditioning, plus 3 months follow-up
Authors
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Supports spinal involvement in human motor skill learning; leaves open clinical translation to rehabilitation.
RCT (n=17)
Randomly assigned
No
Absolute Event Rate: 140% vs 100%
p-value: p=<0.0001
Operant conditioning of the soleus H-reflex in humans consists of both rapid task-dependent adaptation and gradual long-term change.
Thompson et al. (2009) conducted an RCT in Healthy volunteers (n=17). Operant conditioning of the soleus H-reflex (HRup or HRdown) vs. Baseline H-reflex size was evaluated on Final conditioned H-reflex size as percentage of baseline (p=<0.0001). Operant conditioning over 24 sessions successfully increased the soleus H-reflex to 140% of baseline in HRup subjects and decreased it to 69% of baseline in HRdown subjects.