Mats Björkman’s research while affiliated with Umeå University and other places

Accuracy in matching was investigated cross-modally (touch and vision) and intra-modally. The stimuli were surfaces of sand-paper. Two experiments showed (a) that matched stimuli are linearly related to the standard stimuli for the two intra-modal conditions, whereas non-linear relations (power-functions) were obtained in the two cross-modal conditions (touch-vision and vision-touch), (b) that the variance of matched stimuli is approximately three times as large when matching is performed cross-modally as compared to intra-modal matching. Data were analyzed according to a model which suggests that the correlation between discriminal dispersions belonging to the same modality is higher than the correlation between discriminal dispersions arising from two modalities.