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Biomedical subjects

J D Call

Publications and source records attributed to J D Call.

14 recordsLinked to original sources
PubMed1998

Extraordinary changes in behavior in an infant after a brief separation.

A previously healthy 8-month-old infant experienced a dramatic change in affect, motor patterns, and appetite after a brief (4-day) separation from her parents. She went from being a happy, interactive, and engaging child to being withdrawn, with limited vocalization, spontaneous motor activity, or interest in her environment. For the first 3 days after her parents returned home, she refused solid food and most of the formula or water she was offered. Over the following week, her appetite increased minimally. Her parents were concerned about her apathy, excessive quietness, and lack of interest in food, toys, or their own attempts to engage her in play. At the pediatrician's office, she was significantly less interactive and playful compared with previous visits. Her temperature, heart rate, and respiratory rate were normal. Although there were no objective signs of dehydration, her weight was 8 ounces less than the previous recorded weight 1 month ago. Results of the physical examination were normal, with the exception of neurological and behavioral findings. She had mild, generalized decreased tone and strength, with normal deep tendon reflexes, a sad facial appearance with sustained furrowing of the lines in her forehead, difficulty in eliciting a social smile, and limited spontaneous sounds. There was an absence of focal neurological findings, a flat open anterior fontanel, and a head circumference measurement consistent with previous recorded results. There were no cutaneous bruises, and findings of her funduscopic examination did not reveal retinal hemorrhage. Before the 4-day holiday, child care was provided almost exclusively by her mother at home. On only two previous occasions, at 4 and 6 months of age, this first child of 20-year-old high school graduate parents was cared for by a neighbor when the parents went out to a movie theater. She cried for about 10 minutes when the parents left on these occasions. Her mother stated that she felt anxious about leaving the child for several days, but she and her husband decided that they needed a break and planned the 4-day vacation. Child care was provided by the neighbor, who did not notice any unusual behavior or refusal to feed while in her care during the parents' absence.

Anxiety, Separation↗
PubMed1992

Regional cerebral glucose metabolism and attention in adults with a history of childhood autism.

Sixteen high-functioning adults with a history of childhood autism and 26 normal control subjects underwent [18F]fluoro-2-deoxyglucose positron-emission tomography to assess regional cerebral glucose metabolic rate (GMR). Autistic patients had a left > right anterior rectal gyrus asymmetry, as opposed to the normal right > left asymmetry in that region. Patients also showed low GMR in the left posterior putamen and high GMR in the right posterior calcarine cortex. Brain regions with GMR > 3 SD from the normal mean were more prevalent in patients than in control subjects. This variable pattern of abnormal activity is consistent with heterogeneous neurophysiological etiology; group differences in striatum and cortex may represent a final common pathway.

Adolescent↗
PubMed1984

Child abuse and neglect in infancy: sources of hostility within the parent-infant dyad and disorders of attachment in infancy.

The human infant is prepared during fetal life and arrives on the scene ready to participate actively as a partner with the parent in structuring his own development. Parents are normally prepared for this participant activity by achieving a high degree of sensitivity to the signals of distress of and by the infant's affective engagement with them. The meaning of ordinary distress signals is in instances of child abuse and neglect determined by an unconscious mythology which the parent has about the infant, and also by what the parent finds unacceptable in oneself and projects onto the infant. The recent research on mother-infant attachment is reviewed. Landmarks for normal attachment behaviors from birth to age 3 are defined within seven different age groupings, and the psychiatric syndrome, "Reactive Attachment Disorder of Infancy," is described and is found almost universally in failure to thrive without organic cause babies. The diagnosis of Reactive Attachment Disorder is preferable because it leads to appropriate preventive and interventive action.

Adult↗
PubMed1980

Some prelinguistic aspects of language development.

Most studies of language acquisition since Chomsky's break-through in linguistics have all utilized as a theoretical base various theories of cognitive development out of which words, phrases, and meanings are created. This study attempts to outline the underpinnings of language ontogenetically and to show the role of affective engagements with caretakers. Some of the prelinguistic aspects of language development are examined in relation to the volution of language function. The newborn infant engages and terminates visual, kinesthetic, oral, and sound reciprocity with the mother, as shown in the cough-smile game, thus providing the infant a significant measure of control over these reciprocal exchanges. The social smile, modulations thereof, and the face itself become organizers of meaningful vocalization, a focal point around which phonemes emerge from the mutuality of the mother-infant relationship. The evolution and meaning of the pointing gesture as it relates to language functioning and to the stages of separation-individuation is discussed. It is suggested that the child's capacity to evaluate the context of utterances in relation to dynamically integrated facial-vocal configurations with familiar caretakers provides the basis for the development of semantics and syntax in later language functioning.

Child↗