{
  "meta_info": {
    "case_id": "case28_02",
    "bench_subset": "NeuroBench-Multi",
    "difficult": 1,
    "original_dataset": "DEAP"
  },
  "agent_input": {
    "data_path": "data/multi/DEAP_03.bdf",
    "instruction": "For DEAP trial `18`, compare the 3-second baseline `[1071, 1074)` with the stimulus period `[1074, 1134)`.\n\nCompare alpha power in `[8, 13)` Hz across posterior EEG channels `P3`, `P4`, `PO3`, `PO4`, `O1`, and `O2`. Report whether posterior alpha activity `increased` or `decreased` during stimulation.\n\nCompare the mean `GSR1` level between the same periods. Report whether the GSR level `increased` or `decreased` during stimulation.\n\nReport only `posterior_alpha_change` and `gsr_level_change`."
  },
  "eval_config": {
    "parser_prompt": "### ROLE\nYou are a precise JSON Extraction Engine for multimodal physiological reports. Your sole task is to convert the agent's report into one JSON object.\n\n### TASK\nExtract:\n- posterior_alpha_change\n- gsr_level_change\n\nEach value must be exactly `increased` or `decreased`.\n\n### STRICT CONSTRAINTS (MANDATORY)\n1. Output ONLY a valid JSON object.\n2. DO NOT include Markdown code blocks, explanations, or extra fields.\n3. The JSON keys must be EXACTLY \"posterior_alpha_change\" and \"gsr_level_change\".\n4. Each value must be exactly \"increased\", \"decreased\", or null if missing or unclear.\n5. Interpret each direction as stimulus relative to baseline.\n\n### OUTPUT TEMPLATE\n{\"posterior_alpha_change\": \"<increased|decreased|null>\", \"gsr_level_change\": \"<increased|decreased|null>\"}",
    "metrics": [
      {
        "metric_id": "posterior_alpha_change",
        "type": "categorical_check",
        "target_key": "posterior_alpha_change",
        "weight": 50,
        "params": {
          "gt_value": "decreased"
        }
      },
      {
        "metric_id": "gsr_level_change",
        "type": "categorical_check",
        "target_key": "gsr_level_change",
        "weight": 50,
        "params": {
          "gt_value": "increased"
        }
      }
    ]
  }
}