"flat affect" meaning in English

{
  "forms": [
    {
      "form": "flat affects",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "flat affect (plural flat affects)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Polish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Medicine",
          "orig": "en:Medicine",
          "parents": [
            "Biology",
            "Healthcare",
            "Sciences",
            "Health",
            "All topics",
            "Body",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "After the crash he presented a flat affect, a symptom of PTSD."
        }
      ],
      "glosses": [
        "Lack of emotion, or of apparent emotion."
      ],
      "id": "en-flat_affect-en-noun-DtZrX769",
      "links": [
        [
          "medicine",
          "medicine"
        ],
        [
          "emotion",
          "emotion"
        ],
        [
          "apparent",
          "apparent"
        ]
      ],
      "raw_glosses": [
        "(medicine) Lack of emotion, or of apparent emotion."
      ],
      "related": [
        {
          "word": "anhedonia"
        },
        {
          "word": "labile affect"
        }
      ],
      "topics": [
        "medicine",
        "sciences"
      ],
      "translations": [
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "Translations",
          "tags": [
            "neuter"
          ],
          "word": "spłycenie afektu"
        }
      ],
      "wikipedia": [
        "flat affect"
      ]
    }
  ],
  "word": "flat affect"
}

{
  "forms": [
    {
      "form": "flat affects",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "flat affect (plural flat affects)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "anhedonia"
    },
    {
      "word": "labile affect"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Polish translations",
        "Translation table header lacks gloss",
        "en:Medicine"
      ],
      "examples": [
        {
          "text": "After the crash he presented a flat affect, a symptom of PTSD."
        }
      ],
      "glosses": [
        "Lack of emotion, or of apparent emotion."
      ],
      "links": [
        [
          "medicine",
          "medicine"
        ],
        [
          "emotion",
          "emotion"
        ],
        [
          "apparent",
          "apparent"
        ]
      ],
      "raw_glosses": [
        "(medicine) Lack of emotion, or of apparent emotion."
      ],
      "topics": [
        "medicine",
        "sciences"
      ],
      "wikipedia": [
        "flat affect"
      ]
    }
  ],
  "translations": [
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "Translations",
      "tags": [
        "neuter"
      ],
      "word": "spłycenie afektu"
    }
  ],
  "word": "flat affect"
}