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persistent complex bereavement disorder

in DSM–5, a proposed diagnosis labeled “for further study” and based on a combination of symptoms, such as preoccupation with the deceased, marked difficulty accepting the death of a loved one, a desire to die to be with the deceased, difficulty trusting other individuals since the death, and clinically significant distress or impairment; for this diagnosis, at least 12 months (adults) or 6 months (children) must have passed since the death.

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Psychology term of the day

November 18th 2024

center–surround antagonism

center–surround antagonism

a characteristic of the receptive fields of many visual and somatosensory neurons in which stimulation in the center of the receptive field evokes opposite responses to stimulation in the periphery. Thus, some neurons depolarize with center stimulation and hyperpolarize when the same stimulus appears in the surrounding region of the receptive field, whereas other neurons have the opposite pattern of responses. Center–surround antagonism greatly increases the sensitivity of the nervous system to contrast. See also off response; on response; simple cell.