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Behavioural profiles of higher-level vision after posterior cerebral artery stroke

Publikation: Bidrag til tidsskriftKonferenceabstrakt i tidsskriftForskningfagfællebedømt

The presence and degree of category-selective responses in the human brain remains a central research question in visual neuroscience. Evidence for category-selectivity in higher-level vision stems from neuroimaging studies of healthy participants, and converging evidence in patients after brain injury. However, the neuropsychological literature often focuses on either in-depth analysis of single case-studies or behavioural testing of one category, for example faces or words.
Here we adopt a novel approach to studying higher-level vision after brain injury by exploring the largest sample of posterior cerebral artery stroke patients currently available (n = 64). Patients were tested using an in-depth behavioural battery encompassing both low-level visual tests and higher-level visual tests of word, object, and face processing.
A data-driven approach (principal component analysis) was used to establish a pattern of co-occurrence within higher-level vision. The data revealed two principal components underlying patients’ performance. The first component included tests with a non-verbal (picture) input, including face and object processing. The second component included tests with a verbal (written word) input/output. Using a data-driven approach to study higher-level vision after brain injury suggests that patient’s behavioural performance does not reflect strict category-selective responses.
OriginalsprogEngelsk
TidsskriftPerception
Vol/bind48
Udgave nummer2
ISSN0301-0066
DOI
StatusUdgivet - 2019
BegivenhedEuropean Conference on Visual Perception - Leuven, Belgien
Varighed: 25 aug. 201929 aug. 2019
Konferencens nummer: 42
https://kuleuvencongres.be/ecvp2019

Konference

KonferenceEuropean Conference on Visual Perception
Nummer42
LandBelgien
ByLeuven
Periode25/08/201929/08/2019
Internetadresse

ID: 228814993