Ana Maria Portugal
Biographic Data
| ID | 932094 |
|---|---|
| NAME | Ana Maria Portugal |
| GIVEN NAMES | Ana Maria |
| FAMILY NAME | Portugal |
| SIGNATURE | PORTUGAL A M |
| AFFILIATIONS | Uppsala University |
| ORCID | 0000-0002-3627-0753 |
| VERIFIED | Yes |
| TOTAL WORKS | 10 |
| TOTAL CITATIONS | 1 |
| AUTHOR COUNT | 10 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2001 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 1 |
Different sensory dimensions in infancy are associated with separable etiological influences and with autistic traits in toddlerhood
BACKGROUND: Infants vary significantly in the way they process and respond to sensory stimuli, and altered sensory processing has been reported among infants later diagnosed with autism. Previous work with adolescents and adults suggests that variability in sensory processing may have a strong genetic basis. Yet, little is known about the etiological factors influencing sensory differences in infancy, when brain circuits supporting social and non…
Genetic and environmental contributions to individual differences in visual attention and oculomotor control in early infancy
Infants differ in their level of eye movement control, which at the extreme could be linked to autism. We assessed eye movements in 450 twins (225 pairs, 57% monozygotic, 46% female, aged 5–6 months) using the gap-overlap eye-tracking task. Shorter latency in the gap condition was associated with having more parent-rated autistic traits at 2 years. Latency across the task's three conditions was primarily explained by one highly heritable latent f…
Sustained looking at faces at 5 months of age is associated with socio‐communicative skills in the second year of life
Efficiently processing information from faces in infancy is foundational for nonverbal communication. We studied individual differences in 5‐month‐old infants' ( N = 517) sustained attention to faces and preference for emotional faces. We assessed the contribution of genetic and environmental influences to individual differences in these gaze behaviors, and the association between these traits and other concurrent and later phenotypes. We found a…
Do pre-schoolers with high touchscreen use show executive function differences
The recent increase in children's use of digital media, both TV and touchscreen devices (e.g., tablets and smartphones), has been associated with developmental differences in Executive Functions (EF). It has been hypothesised that early exposure to attention-commanding and contingent stimulation provided by touchscreens may increase reliance on bottom-up perceptual processes and limit the opportunity for practice of voluntary (i.e., top-down) att…
Preferential looking to eyes versus mouth in early infancy
BACKGROUND: From birth, infants orient preferentially to faces, and when looking at the face, they attend primarily to eyes and mouth. These areas convey different types of information, and earlier research suggests that genetic factors influence the preference for one or the other in young children. METHODS: In a sample of 535 5-month-old infant twins, we assessed eye (relative to mouth) preference in early infancy, i.e., before neural systems f…
Infants’ looking preferences for social versus non-social objects reflect genetic variation
To what extent do individual differences in infants’ early preference for faces versus non-facial objects reflect genetic and environmental factors? Here in a sample of 536 5-month-old same-sex twins, we assessed attention to faces using eye tracking in two ways: initial orienting to faces at the start of the trial (thought to reflect subcortical processing) and sustained face preference throughout the trial (thought to reflect emerging attention…
Pupil size and pupillary light reflex in early infancy
BACKGROUND: Measures based on pupillometry, such as the pupillary light reflex (PLR) and baseline pupil size, reflect physiological responses linked to specific neural circuits that have been implicated as atypical in some psychiatric and neurodevelopmental conditions. METHODS: We investigated the contribution of genetic and environmental factors to the baseline pupil size and the PLR in 510 infant twins assessed at 5 months of age (281 monozygot…
Saccade dysmetria indicates attenuated visual exploration in autism spectrum disorder
BACKGROUND: Visual exploration in autism spectrum disorder (ASD) is characterized by attenuated social attention. The underlying oculomotor function during visual exploration is understudied, whereas oculomotor function during restricted viewing suggested saccade dysmetria in ASD by altered pontocerebellar motor modulation. METHODS: Oculomotor function was recorded using remote eye tracking in 142 ASD participants and 142 matched neurotypical con…
Literatura e Psicanálise
.
A Tela de Kafka
A partir das impressões de Kafka frente ao cinema apresentamos uma leitura da construção de seu romance América, cujo elemento pulsional mais forte concentra-se no olhar: ver/ser visto, aparecer/desaparecer. Pensando o cinema como um patamar de diminuição do real, como narração fugida, Kafka responde com a escrita
Infants’ looking preferences for social versus non-social objects reflect genetic variation
To what extent do individual differences in infants’ early preference for faces versus non-facial objects reflect genetic and environmental factors? Here in a sample of 536 5-month-old same-sex twins, we assessed attention to faces using eye tracking in two ways: initial orienting to faces at the start of the trial (thought to reflect subcortical processing) and sustained face preference throughout the trial (thought to reflect emerging attention…
A Tela de Kafka
A partir das impressões de Kafka frente ao cinema apresentamos uma leitura da construção de seu romance América, cujo elemento pulsional mais forte concentra-se no olhar: ver/ser visto, aparecer/desaparecer. Pensando o cinema como um patamar de diminuição do real, como narração fugida, Kafka responde com a escrita
Literatura e Psicanálise
.
Saccade dysmetria indicates attenuated visual exploration in autism spectrum disorder
BACKGROUND: Visual exploration in autism spectrum disorder (ASD) is characterized by attenuated social attention. The underlying oculomotor function during visual exploration is understudied, whereas oculomotor function during restricted viewing suggested saccade dysmetria in ASD by altered pontocerebellar motor modulation. METHODS: Oculomotor function was recorded using remote eye tracking in 142 ASD participants and 142 matched neurotypical con…
Pupil size and pupillary light reflex in early infancy
BACKGROUND: Measures based on pupillometry, such as the pupillary light reflex (PLR) and baseline pupil size, reflect physiological responses linked to specific neural circuits that have been implicated as atypical in some psychiatric and neurodevelopmental conditions. METHODS: We investigated the contribution of genetic and environmental factors to the baseline pupil size and the PLR in 510 infant twins assessed at 5 months of age (281 monozygot…
Do pre-schoolers with high touchscreen use show executive function differences
The recent increase in children's use of digital media, both TV and touchscreen devices (e.g., tablets and smartphones), has been associated with developmental differences in Executive Functions (EF). It has been hypothesised that early exposure to attention-commanding and contingent stimulation provided by touchscreens may increase reliance on bottom-up perceptual processes and limit the opportunity for practice of voluntary (i.e., top-down) att…
Preferential looking to eyes versus mouth in early infancy
BACKGROUND: From birth, infants orient preferentially to faces, and when looking at the face, they attend primarily to eyes and mouth. These areas convey different types of information, and earlier research suggests that genetic factors influence the preference for one or the other in young children. METHODS: In a sample of 535 5-month-old infant twins, we assessed eye (relative to mouth) preference in early infancy, i.e., before neural systems f…
Infants’ looking preferences for social versus non-social objects reflect genetic variation
To what extent do individual differences in infants’ early preference for faces versus non-facial objects reflect genetic and environmental factors? Here in a sample of 536 5-month-old same-sex twins, we assessed attention to faces using eye tracking in two ways: initial orienting to faces at the start of the trial (thought to reflect subcortical processing) and sustained face preference throughout the trial (thought to reflect emerging attention…
Sustained looking at faces at 5 months of age is associated with socio‐communicative skills in the second year of life
Efficiently processing information from faces in infancy is foundational for nonverbal communication. We studied individual differences in 5‐month‐old infants' ( N = 517) sustained attention to faces and preference for emotional faces. We assessed the contribution of genetic and environmental influences to individual differences in these gaze behaviors, and the association between these traits and other concurrent and later phenotypes. We found a…
Different sensory dimensions in infancy are associated with separable etiological influences and with autistic traits in toddlerhood
BACKGROUND: Infants vary significantly in the way they process and respond to sensory stimuli, and altered sensory processing has been reported among infants later diagnosed with autism. Previous work with adolescents and adults suggests that variability in sensory processing may have a strong genetic basis. Yet, little is known about the etiological factors influencing sensory differences in infancy, when brain circuits supporting social and non…
Genetic and environmental contributions to individual differences in visual attention and oculomotor control in early infancy
Infants differ in their level of eye movement control, which at the extreme could be linked to autism. We assessed eye movements in 450 twins (225 pairs, 57% monozygotic, 46% female, aged 5–6 months) using the gap-overlap eye-tracking task. Shorter latency in the gap condition was associated with having more parent-rated autistic traits at 2 years. Latency across the task's three conditions was primarily explained by one highly heritable latent f…
Developmental psychology (8 works) · Psychology (8 works) · Autism (4 works) · Autism Spectrum Disorder Research (4 works) · Face Recognition and Perception (4 works) · Heritability (4 works) · Neuroscience (4 works) · Autism spectrum disorder (3 works) · Cognition (3 works) · Perception (3 works)