TY  - JOUR
A1  - Ehlers, Jan
A1  - Grimmer, Janine
A1  - Strack, Veronika
A1  - Huckauf, Anke
T1  - The influence of sham feedback on physiological processing during fear-driven stimulation
JF  - PLOS ONE
N2  - Biofeedback constitutes a well-established, non-invasive method to voluntary interfere in emotional processing by means of cognitive strategies. However, treatment durations exhibit strong inter-individual variations and first successes can often be achieved only after a large number of sessions. Sham feedback constitutes a rather untapped approach by providing feedback that does not correspond to the participant’s actual state. The current study aims to gain insights into mechanisms of sham feedback processing in order to support new techniques in biofeedback therapy. We carried out two experiments and applied different types of sham feedback on skin conductance responses and pupil size changes during affective processing. Results indicate that standardized but context-sensitive sham signals based on skin conductance responses exert a stronger influence on emotional regulation compared to individual sham feedback from ongoing pupil dynamics. Also, sham feedback should forego unnatural signal behavior to avoid irritation and skepticism among participants. Altogether, a reasonable combination of stimulus features and sham feedback characteristics enables to considerably reduce the actual bodily responsiveness already within a single session.
KW  - Biofeedback
KW  - Biofeedback
KW  - Sham Feedback
KW  - Affective Processing
KW  - OA-Publikationsfonds2021
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20210510-44249
UR  - https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0251211
IS  - Volume 16, issue 5, article e0251211
SP  - 1
EP  - 17
PB  - PLOS
CY  - San Francisco, Calif.
ER  - 
TY  - JOUR
A1  - Huckauf, Anke
A1  - Nazir, Tatjana A.
T1  - How odgcrnwi becomes crowding: Stimulus-specific learning reduces crowding
JF  - Journal of Vision
N2  - Processes underlying crowding in visual letter recognition were examined by investigating effects of training. Experiment 1 revealed that training reduces crowding mainly for trained strings. This was corroborated in Experiment 2, where no training effects were obvious after 3 days of training when strings changed from trial to trial. Experiment 3 specified that after a short amount of training, learning effects remained specific to trained strings and also to the trained retinal eccentricity and the interletter spacing used in training. Transfer to other than trained conditions was observed only after further training. Experiment 4 showed that transfer occurred earlier when words were used as stimuli. These results thus demonstrate that part of crowding results from the absence of higher level representations of the stimulus. Such representations can be acquired through learning visual properties of the stimulus.
KW  - Schriftzeichenerkennung
KW  - Training
Y1  - 2007
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170418-31389
SP  - 1
EP  - 12
ER  -