Down Syndrome Flashcards
Physical phenotype of Down Syndrome
Dysmorphic facial features
Low muscle tone
Loose joints
Medical phenotype of Down Syndrome
Sucking and feeding problems
Heart defects
Hearing and vision defects
Respiratory problems
Behaviour of Down Syndrome
Cheerful and affectionate
Showing more positive facial expressions
Lower pathology and prone to distraction
Down Syndrome children tend to have behaviour difficulties that change across development
Dykens et al (2002)
Who found out that Down Syndrome was caused by genetic trisomy in 3rd chromosome 21
Patterson (1987)
Down Syndrome is not inherited, rather a random mutation
Coppede (2016)
Some Down Syndrome could be inherited, with evidence for mother’s side
Arbuzova (2001)
Impairments in Down Syndrome could be due to impairments in hippocampal function
Nadel (2003)
Frontal lobe degeneration of Down Syndrome could cause Alzheimers
Fonseca et al (2016)
Down Syndrome people have more grey and white brain matter and smaller brain volume, specifically around hippocampus and cerebral cortex
Hamner et al (2018)
Down Syndrome
Reduced volume - frontal lobe and temporal lobe
Normal - basal ganglia and parietal lobe
Stops growing - Cerebellum
Altered - Hippocampal system
Lott and Dierssen (2010)
Gestures in speech were responded to by Down Syndrome teens
Attwood et al (1988)
Speech is more unintelligible in children with Down Syndrome than control children due to differences in the vocal tract
Abbeduto and Murphy (2004)
Down syndrome speech:
Phonological errors in speech production
Poor speech intelligibility
Receptive vocabulary unaffected
Expressive vocabulary acquisition is delayed
Grammar is a struggle
Some differences in pragmatics
Martin et al (2009)
Down syndrome people tended to judge facial expressions as more positive than controls, struggled with identifying neutral expressions
Hippolyte et al (2008)