Cognitive and sensory capacity each contribute to the canine spatial bias

Ethology, Год журнала: 2023, Номер 130(2)

Опубликована: Ноя. 19, 2023

Dogs interpret cues as being about location, which human infants would relate to objects. This spatial bias could shed light on the evolution of object-centered thought, however, research needs rule out that this is not a by-product dogs' weaker (compared humans) visual capacities. In study, we used data set in dogs were tested two types learning tasks (discrimination and reversal learning) with rewarded (location object features). both tasks, displayed bias, is, faster when cue was location. We investigated how sensory cognitive capacity each contributes bias. To end, an estimate for general ability (g) obtained from battery tests some dogs. Cephalic index, feature targeted breeding linked differences capacity, correlated negatively expression only easier discrimination task, while negative correlation between g factor scores emerged more difficult task. conclude cannot be reduced limitation overcome greater capacity.

Язык: Английский

Sleep-spindles as a marker of attention and intelligence in dogs

NeuroImage, Год журнала: 2024, Номер 303, С. 120916 - 120916

Опубликована: Ноя. 5, 2024

The sleep spindle-generating thalamo-cortical circuitry supports attention capacity in awake humans and animals, but using spindles to predict differences has not been tried either. Of the more commonly examined cognitive correlates of spindle occurrence amplitude, post-sleep recall, general intelligence, only recall had studied dogs, rats mice. Here, we a sample companion dogs (N = 58) for whom polysomnographic recordings several tests were performed on two occasions each, with three-month break in-between. Five used extract factor analogous human g (general mental ability). A sixth test battery measured sustained attention. Both g-factor scores linked higher slow absolute sigma power detected over central electrode. These effects persisted across measurement occasions. Higher intrinsic frequency was, turn, lower displayed no relationship scores. overlap localization direction density (spindles/minute) that they tap into same underlying cognition-relevant aspects spindling. Given earlier large meta-analysis validations as reliable predictor performance humans, thus conclude currently handled method quantifying indeed measures activity by virtue its agreement alternative.

Язык: Английский