The speed of object recognition from a haptic glance: event-related potential evidence

Journal of Neurophysiology
Ane Gurtubay-AntolinAntoni Rodríguez-Fornells

Abstract

Recognition of an object usually involves a wide range of sensory inputs. Accumulating evidence shows that first brain responses associated with the visual discrimination of objects emerge around 150 ms, but fewer studies have been devoted to measure the first neural signature of haptic recognition. To investigate the speed of haptic processing, we recorded event-related potentials (ERPs) during a shape discrimination task without visual information. After a restricted exploratory procedure, participants (n = 27) were instructed to judge whether the touched object corresponded to an expected object whose name had been previously presented in a screen. We encountered that any incongruence between the presented word and the shape of the object evoked a frontocentral negativity starting at ∼175 ms. With the use of source analysis and L2 minimum-norm estimation, the neural sources of this differential activity were located in higher level somatosensory areas and prefrontal regions involved in error monitoring and cognitive control. Our findings reveal that the somatosensory system is able to complete an amount of haptic processing substantial enough to trigger conflict-related responses in medial and prefrontal cortices in <200 ms....Continue Reading

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Citations

Jul 31, 2019·PloS One·Håvard LoråsArve Vorland Pedersen
Dec 18, 2018·Frontiers in Behavioral Neuroscience·Xian HuAriel Agmon
Oct 31, 2017·The Journal of Physiology·Martin E HérouxSimon C Gandevia

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