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Short-term memory mechanisms of habituation in the domestic chick (Gallus gallus)

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naire for Students has been developed to measure which methods teachers use to motivate their students. The ques-tionnaire is composed of 37 items on a 5-point Likert scale. In order to determine the dimensionality and constructive validity of the motivational questionnaire, we used explora-tory factor analysis. After the first order factor analysis was performed, we used the obtained factor scores for the second factor analysis (hierarchical factor analysis). The second fac-tor analysis yielded two facfac-tors explaining 52% variance. The results show that this factor solution can supports the theory of visible learning.

Neuroscience

Short-term memory mechanisms of habituation

in the domestic chick (Gallus gallus domesticus)

Andrea Dissegna 1, Massimo Turatto 2, Cinzia Chiandetti 1

1Department of Life Sciences, University of Trieste, Italy 2CIMeC-Center for Mind/Brain Sciences, University of Trento,

Italy

Contact: [email protected]

Habituation and dishabituation reflect two forms of experi-ence-dependent plasticity. Habituation consists of a response decrement to a reiterated irrelevant stimulus, whereas disbituation consists in the recovery of the response to the ha-bituated stimulus when a new one is presented. Dishabitua-tion would arise because the model of the habituated stimulus stored in short-term memory (STM) is perturbed by the novel sensory input. Studying the ontogeny of these processes can shed light on the development of the underlying memory mechanisms. We investigated habituation and dishabituation of the freezing response to a sudden acoustic stimulation in newly hatched chicks (N = 36) by comparing two early devel-opmental ages (1 day vs. 3 days after hatching). The results showed that dishabituation was fully present a few hours af-ter hatching, indicating that in this precocial avian species habituation and dishabituation share the same developmental trajectory, and that the underlying STM mechanisms are fully and simultaneously operative soon after birth. Moreover, the amount of habituation, after dishabituation, was larger in 1-day-old than in 3-1-day-old chicks, in agreement with previous findings showing a rapid attenuation of plasticity soon after birth in this avian species. Our results support the hypothesis that dishabituation represents a disruption of the habituation model stored in STM, but also indicate that dishabituation does not necessarily appear at later stages of development compared to habituation as previously postulated in other species.

Exploring the structural neural background of

body ownership

Timea Budai , Beatrix Lábadi , Nikolett Arató , Orsolya Inhóf , Szabolcs Bandi , András Zsidó , Gergely Darnai , Kata Lénárd Institute of Psychology, University of Pécs, Hungary Contact: [email protected]

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